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How to fix warped rotors

When your car shakes while coming to a stop, you need to change your rotors or have them turned. You can learn all kinds of stuff on my youtube channel To warp a brake rotor, you must have more heat on one side of the rotor than the other. Whitepaper on Warped Rotors from Centric Brakes The Warped Brake Disc & Other Myths of the Braking System. by Carroll Smith, Consulting Engineer at Stoptech Click on the image below to read the PDF of this whitepape

You need to change both. My advice is not to have them turned because if you have rotors made out of steel and they warp, and you turn them the other way to make them flat then they are thinner. They already warped once and they are going to warp again even faster. So just replace them with new rotors and brake pads If the rotors are fairly new then you may not need to replace them. You can take them off and drive them down to your local auto parts store and have them turned on a special machine that grinds down the outer warped layer of the metal to make the surface smooth and even again This is a super quick diagnosis technique for someone who's pretty darn sure they are dealing with a warped rotor on their motorcycle

After installing new disc rotors and/or brake pads, perform eight to 10 slowdowns applying moderate pressure from about 30 to 40 mph (50 to 60 kph) without coming to a stop. 2. Make an additional two or three slowdowns applying heavy pressure from about 40 to 45 mph (60 to 70 kph) without coming to a stop. 3 Can you fix warped brake rotor. Jump to Latest Follow 1 - 12 of 12 Posts. dkawa · Registered. Joined Oct 2, 2005 · 221 Posts . Discussion Starter · #1 · Sep 20, 2008. I have a warped front brake rotor and it's getting worse.. There have been a few post on pulsating brakes, one cause is a warped disk. It is not a very common thing with floating disks brakes because they float on a band of rings and the rotor itself is heat tempered. However a dragging brake pad can heat up a disk and warp it. I have been getting alot o.. However, if you suspect that your car has warped rotors, the best thing to do is to pull over and make immediate contact with a nearby mechanic. Brake failure simply informs you that you should stop driving your vehicle. There consequences for driving with warped rotors. Below are a few of the adverse effects of carrying on with warped rotors Warped brake rotors are far less effective at stopping fast if you need to slam on the brakes. Signs that your brake rotors are warped. Rotors are generally smooth and flat and if they are warped they can display the following signs: Noisy brakes- warped rotors contact brake pads at uneven intervals producing a squeak, squeal, or a scraping.

How to fix your warped rotors! - YouTub

  1. The price of fixing warped rotors really depends on how warped they are.Going into a mechanics with an estimation of around $200 is a pretty reasonable deal. However, after this fix-up, chances are you won't have to worry about your rotors for a long time
  2. Replacing your brake rotors with a new one is the best way to fix warped rotors. Brake rotors that are resurfaced will get thinner each time it is done and will reduce their lifespan. Replacing your brake rotor will also be the best option because of these reasons - the cost and the thickness
  3. A warped rotor needs to be replaced. You can try turning it on a lathe but if it was thin enough to warp then its probably too thin to turn and be safe and prevent warping again when it gets hot
  4. 1A Auto shows you how to diagnose warped brake rotors. List of tools used:• No Tools NeededFor More Info visit us at http://1aau.to/h/bnu/⚠ DISCLAIMER:Whil..
  5. I took my warped rotor and had it turned for $12 at my local auto parts store. After turning the rotor, install it on the car and measure runout again. Turning rotors doesn't always fix the problem of excessive runout. In my case, after turning the rotor runout decreased from 0.004 to 0.002 inch
  6. How to Fix Warped Rotors on an Electric Scooter Place your scooter on an elevated surface, so you can spin the wheels freely. Elevate your scooter on something sturdy like an upturned milk crate, so you can easily spin the wheels while having an eye-line straight down on the brake caliper
  7. The only way to fix a warped rotor would be to have them turned on a lathe. This will remove a small layer of metal so that you are now on a fresh, flat surface. While this is a common practice on cars, I think that the motorcycle rotor would not be able to be turned do to their very thin size to begin with

Diagnose and Fix Warped Rotors. If you feel your car shakes when braking and there's a pulsation or vibration when you press the brake pedal, you probably have worn or warped brake rotors. Brake rotors are a big part of the braking system and driving with worn rotors is unsafe. Find out the signs of bad brake rotors, what causes bad brake. If the warped rotor is on the drive axle of the car, the stopping time of your vehicle will be more noticeable. A warped rotor can cause the brakes to temporarily fail. The warped rotor causes the brake pads to wiggle back and forth, which causes the brake fluid to foam up so the braking system does not get the proper amount of hydraulic pressure Look between the rotor and the ruler. If you see a gap between the two, it's a good sign the rotor has been warped. A warped rotor must be replaced with a new one. It cannot be turned or resurfaced. If the rotor isn't warped, be sure to check the brake rotor on the other side as well

Warped brake rotors — Ricks Free Auto Repair Advice Ricks

  1. So, do not drive when your rotors are warped. Immediately take your vehicle to the mechanic and fix up the issue. Conclusion. This is all about the article. Whenever you notice any kind of signal from the vehicle indicating the damage in the rotor fix it as soon as possible. Also never drive when you realize that the rotors are damaged
  2. The warped rotors in your car are the result of uneven wear of the brakes. Read this article to know how to fix the warped rotors in a car. 404-296-6111 2990 North Decatur Road Decatur, GA 3003
  3. The warped rotor myth is a little bit of both. A rotor that contributed to a pulsation condition certainly appears warped. Plus, everyone says it — even technicians that know the rotor isn't ­really warped will say it as shorthand. Rotors are cast in extreme heat — three to five times greater than the most aggressive braking situation

Warped brake rotor--what causes that and how to repair r

Warped Rotors: Why Does My Car Shake When I Hit the Brakes

  1. Unfortunately, turning rotors won't be able to fix the issue of twisted and warped rotors. What If My Car Is Beyond Repair? To fix the signs of warped rotors, drivers sometimes have to shell out thousands of dollars to fix the brakes, the entire braking system, and keep their car in working order
  2. ate, and this writer has done so many times simply by rotating a bolted-down brake rotor between two dial gauges- one on either side of the rotor, with the caliper removed to allow placement of the second gauge. If the rotor is warped, two dial gauges placed directly opposite.
  3. The brake rotors can be warped in the following ways: The brake rotors can become glazed with material from the brake pads. This happens when the brake pads get very hot which causes the pad material to rub off onto the brake rotors. This causes the brake rotor surface to become uneven and decrease the overall efficiency of the brakes
  4. Warped rotors are not a rare thing, and you shouldn't worry about your driving skills if you experience warped rotors. It simply means your rotors are no longer completely flat or have worn out. When your rotors get warped, it is a sign that you will need to carry out some repair and maintenance on them
  5. If your brakes are rubbing it could be down to a bent rotor, so here are some tips to help you identify the problem and how to go about straighten a bent rotor — if that's the cause of the issue

Easy Warped Motorcycle Brake Rotor Diagnosis - YouTub

Oct 24, 2003. #2. Most shops charge $5 to $10 to turn a rotor that you bring to them. If you're dropping off the truck, add labor to remove rotor, re-pack bearings, and new hub seals, etc. A new rotor from the dealer will be about $120 Brake rotor resurfacing involves scraping down the warped metal to achieve a smooth surface. However, it is becoming increasingly common for rotors to be replaced rather than fixed for three main reasons: Cost efficiency: Competitive manufacturing has led rotors to become much less expensive than they used to be, often making the rotor repair. Over time when wear and tear comes in play, rotors get thinner and the heat dissipation have less iron to work with, which makes it more prone to warping. Measurements 2000-2006 Toyota Tundra Front rotors: 12.55″ Ventilated 2004-2008 Ford F150 Front rotors: 13″ Ventilated 2005-2008 Chevy/Gmc 1500 Front: 13″ Ventilate When brake rotors become warped, the amount of force moving the steering wheel back and forth may be violent, and enough to lose control of the steering wheel. Similarly, how much does it cost to fix a warped rotor? The price of fixing warped rotors really depends on how warped they are. Going into a mechanics with an estimation of around $200.

The Real Truth About Warped Brake Rotors

The grooves on the warped rotor can reduce the brake pads' potential to slow the car down and stop on time. In addition, the signs of the warped rotor can cause the vibrations and pulsations felt in the pedal. Turning Brake Rotors . To prevent warped rotors' signs, you need to take proper care of your break and your braking system Warped Rotor Symptoms: Honda Pilot. Rotors are generally smooth and flat and if they are warped they can display the following signs: Noisy brakes- warped rotors contact brake pads at uneven intervals producing a squeak, squeal, or a scraping sound.The noise can range from a rhythmic thumping to pitchy groaning hum

Can you fix warped brake rotor

  1. Knowing the causes can be helpful while learning how to fix a warped dashboard. Here are the common causes of the problem-1. Exposure To Sunlight. Enhanced exposure to the heat can split the chemical molecules in the dashboard - for instance, parking the car in an open position and sunlight through the windshield. After roughly an hour of the.
  2. g to a stop, the brake rotor is likely warped
  3. Driving with warped rotors is not considered safe, and the brake rotors can eventually crack or break, leaving the vehicle at an extreme loss of braking power. When brake rotors become warped, the amount of force moving the steering wheel back and forth may be violent, and enough to lose control of the steering wheel
  4. If the rotors are warped or damaged, you should have them replaced, since any damage done to the rotors restricts the car's stopping ability. You can also contact an experienced repairer to diagnose the brake rotors for any symptom of warping or damaging, and will easily and quickly repair or replace them if need be
  5. Conventional wisdom says that the rotors are warped, but really you might have a problem with friction material transfer. Don't worry, though, as the fix is relatively simple. The diagnosis may be further verified by measuring the surface of the discs to see if they vary in thickness

Two Ways To Fix The Issue Image Credit: Auto Fanatic. It's dangerous to drive with warped rotors. This is because they compromise your vehicle's ability to stop. If you have out-of-spec rotors, fix the issue as soon as possible. There are two ways to fix an out-of-spec rotor: Replace the rotor with a new one Joined Dec 29, 2012. ·. 165 Posts. Discussion Starter · #1 · Jun 11, 2014. Are warped rotors a common problem? Truck only has 32,000km and there's a noticeable pulsation from the front rotors. Dealer says they'll machine them once under warranty. Thought the Tundra had the best brakes in the 1/2 ton segment. Sent from AutoGuide.com App The price of fixing warped rotors really depends on how warped they are. Going into a mechanics with an estimation of around $200 is a pretty reasonable deal. However, after this fix-up, chances are you won't have to worry about your rotors for a long time Brake rotors warping is a common problem. If the bike is still under warranty take it in and the rotors should be replaced under warranty. The problem is that the warranty will only put the stock rotors on the bike and you will have warped rotors again. I put HD floating rotors on and it seemed to help so you may want to check into floating rotors Warped Rotor Symptoms: Kia Sorento. Rotors are generally smooth and flat and if they are warped they can display the following signs: Noisy brakes- warped rotors contact brake pads at uneven intervals producing a squeak, squeal, or a scraping sound.The noise can range from a rhythmic thumping to pitchy groaning hum

Rotors are especially costly to repair or replace. As they rub against worn brake pads, rotors become warped, which makes it tougher to stop the car (if you feel your car shudder as you brake, you probably have warped rotors). Fixing them requires that they be turned or smoothed out by a mechanic -- if, of course, they can be salvaged at all GM warped rotor fix The reason slotted rotors dont warp as much is that they handle heat better. The problem with GM brakes are the calipers. The slides get gunky and do not release fully causing the pad to rub the rotor the entire time you are driving. When you have your rotors replaced or turned, you need to ask them to grease the caliper. When your rotors become warped, gouged, or worn thin, the effectiveness of the brake system diminishes. This has the end result of reducing the safety of the vehicle. What Happens if You Put New Brake Pads on Bad Rotors? If you put new brake pads on a car that has damaged rotors, the pad won't properly contact the rotor surface The price of fixing warped rotors really depends on how warped they are. Going into a mechanics with an estimation of around $200 is a pretty reasonable deal. However, after this fix -up, chances are you won't have to worry about your rotors for a long time The bent rear axle was supposedly leading to warped drums, which in turn put all the braking on the front rotors, which then warped from the heat. There was a lawsuit that got settled out of court. I had a 2005 2nd gen for 13 years and put 215k on it and never had brake problems other than replacing pads and turning rotors at 80k and then 160k

The front brake rotors are the cause of the break pulsation, and are subject to a condition known as lateral run-out, or simply called warped brake rotors. As the brakes are used, heat builds quickly in the brake rotors and brake pads, as a normal byproduct of friction Jeet, Geoffrey Cane below has a good answer, but omitted some detail that might be told in the 43 answers below. Rather than read I'll write. To tell if the rotors are warped you will feel pulsing to your foot when you apply the brakes. No pulse n.. A warped rotor interferes with the brake system and can cause a failure to stop or damage to other parts of the system. Unfortunately, warped rotors in the front and rear produce similar symptoms. If your car is showing signs of a warped rotor, it may be best to have a mechanic determine which one is causing the problem Warped and worn brake rotors may cause vibrations that may be felt in the brake pedals, chassis, or steering wheel. In addition, bad brake rotors may cause the brake pedal to pulsate or vibrate when pressed due to uneven brake discs. The vibrations are caused by the fact that the brake pedal is not in contact with the rotor during braking By Jim Langley. Back in RBR Newsletter Issue No. 784, I shared a nifty trick for How to Fix Disc Brake Rubbing.That article explained how to center the brake over the rotor to stop a minor, common and annoying rub because it causes the brake to drag, wasting your energy

10 Bad Wheel Bearing Symptoms, Causes and How to Fix It

There are several reasons why a brake on your vehicle can jam up. There are many explanations. They can be an over-heated braking system, a defective ABS component, a broken parking brake, and more, or damaged or broken parts (caliper, brake pads, piston or rotor, or another component). Here are the main causes-1. Problem With Brake Calipe Warped 35k-mile rotors from AutoZone wouldn't surprise me at all; warping can also be caused from your driving style (too much on or last minute on), not to mention from water puddle on a hot rotor, or any kind of misalignment (wrong torque on the bolts). You can probably get those rotors turned for $10 a piece and you'll be as good as new.

This can warp the rotors. There is also a mechanism that operates your brake pads, the caliper, and if it sticks, it can warp the rotors. Finally, if a mechanic didn't torque a newly-installed wheel properly, this can warp the rotors. What's Next? If you do end up with warped rotors, you have two repair options depending on the damage • If the rotors are glazed then you will hear an excessive squeaking sound when you apply your brakes. • If the braking becomes wobbly and you start experiencing uneven pressure while braking, then get your rotors checked. • Vibrations when you brake from a high speed, this is an indication of a warped disc. Final thoughts I am definitely not paying $10 per rotor to have them surfaced when I could just buy them outright with a discount. My whole background for this post is reading that the 2004 Titans had two MAJOR problems: (1) Rear ends would fail quick, hence, the reason for them adding fins and synthetic oil to the rear diff. (2) Warped rotors Not sure I got it fixed right away via a rotor resurfacing where they took off 0.035 of an inch. I sanded the glaze off of the pads and put them back on with the newly machined rotors and never experience a problem ever again. Sold the car years later still on the same pads and rotors. That being said it totally possible to warp new rotors

June 2020 bought a new TLX A spec 2.4. Around 15,000K steering wheel started to shake when applying the brakes, 2,000K later the shaking became evident. I took it to the dealership and they said the front rotors are warped and it is due to braking habits !! I don't agree with their assessment, braking habits, as I am gentle on the brakes also. But if you do not fix the issue, the squealing sound will eventually lead to a scraping noise. Your vehicle vibrates when you brake: When your vehicle vibrates when slowing down, this is most likely due to warped or worn out brake rotors. You will often feel irregular vibrations from the brake pedal itself

Learn the quickest, easiest way to straighten warped rotors with just two tools and two minutes. How to Adjust Mechanical Disc Brakes on an Electric Scooter Learn how to do a mechanical disc brake adjustment, including tools and tips for how to fix loose brakes (while keeping the brake light on) I have warped rotors by, for example, coming to a very hard stop off the interstate and hitting a puddle of cold water. It warped instantly. So I have tried to slowly stop on high speed deceleration and avoid hitting puddles with red hot brakes, and I haven't had a warped rotor in more than 15 years

Brakes - Warped Rotor Fix - Maintenance Guides - VFRDiscussio

Every Honda outside of my '96 Accord and my mom's '99 CR-V have had warped rotors on the OEM rotors, replacing them with quality aftermarket rotors resulted in no more warping on any of them. This is very common on modern Hondas for whatever reason, and honestly the 59k is pretty good life out of your brakes based on my forum experiences I used to think 99% of warped rotors were cause by the owners. From parking a car with hot brakes, washing cars with hot brakes and spraying water on them, etc. I've never had problem with warped rotors on any of my cars, and I've done a fair share of autocrossing and open-tracking in heavy, powerful, relatively underbraked cars

Resurfacing Your Rotors. Sometimes your rotors may need to be resurfaced because they have worn unevenly, warped from heat, or become damaged by worn brake pads or pitted from corrosion or rust. Resurfacing rotors removes some of their metal, until the surface is smooth and even again Joined Jan 1, 2009. ·. 194 Posts. #6 · Jan 22, 2011. My 08 Ody had warped rotors at about 6,000miles, and the dealer machined both fronts under warranty. They did it because the car was still in the first year of ownership and under 12,000miles. The machining did fix the problem Driving with warped rotors is not considered safe, and the brake rotors can eventually crack or break, leaving the vehicle at an extreme loss of braking power. When brake rotors become warped , the amount of force moving the steering wheel back and forth may be violent, and enough to lose control of the steering wheel

Warped rotors

Warped Rotors: Can You Drive With It? - Gear Sustai

In some cases, the rotors can even become warped. Every 20,000 miles or so, you should plan on needing to perform a brake service that includes at least pads, and potentially rotors. Rust and. Q: Can I drive my car with the rotors warped until I get it fixed next week? Hi, thanks for your question. There should not be any major concern to drive with them this way assuming it is still drivable other than the vibration..

Everything That Causes Warped Rotors Drivetrain Resourc

The brake rotors and brake calipers are attached to the same spindle that the wheels are attached to, so in certain cases vibrations from warped brake rotors will transmit through the brake calipers and then to the wheels and steering wheel. Brake Noise There are certain cases where you will hear noises emitted from your brake rotors durin I intentionally went with OEM this time (more expensive) because the Brembo rotors I put on (only two years ago) were badly warped and I thought OEM would be better. Adding to the frustration is the oscillations caused by the rotors when braking cause the front end to hop at 45 mph and 25 mph, which I am attributing to the aftermarket shocks I. Makeshift Gauge. The first step is to fasten a zip tie around the frame or fork, and cut the end about 1 cm away so that it lines up close to the disc. Position the cut end of the zip tie close to the disc so you can use it as a makeshift gauge and easily tell where and by how much the disc is bent The rear rotors felt like they were warped and the replacement corrected the problem. I noticed the problem after a,The SOB doesn't have brake lights emergency stop. I had about 15 K on the mucho expensive high end drilled and slotted rotors

How much does it cost to fix warped rotors

Hi, Does anyone know if dealerships will cover warped rotors under the factory warranty? I have a '11 F-150 Ecoboost with rotors that started to warp at around 17,000 miles. I don't brake hard and don't ride the brakes when going on long downhills. Thanks You don't need to hire someone to fix warped composite decking, however. All that you need is a power saw, a claw bar, and a little bit of elbow grease. If you carefully remove the warped composite plank, you can replace it with a new one that is in great shape. Follow along and let's explore exactly how you can fix warped composite decking Warped rotors are relatively common, but that doesn't mean they are okay to drive on Quick Notes. Rotors are an integral part of a car's braking system. Warped rotors can be dangerous to drive on. Repair fees to repair or replaced warped rotors can start at approximately $200

Warped Brake Rotors—The Facts – Moss Motoring

What Are Warped Rotors ️ Everything You Need to Know

The fix for rusty rotors couldn't be easier, they almost fix them selves. Drive your vehicle as normal, apply the brakes normally, no need to brake heavily. The normal braking action will cause the brake pads to clean the rust from the rotors friction surface 3,376 Posts. #2 · Apr 9, 2016 (Edited) Warped brake rotors are rare occurrance; what is much more common is uneven buildup of pad material deposited on rotor surface- thus uneven feel, vibration or pulsation on braking. Resurfacing will fix this That means if it's seriously worn, gouged, or bent, you're better off with a new one. You can, however, straighten a slightly-warped rotor. To inspect the rotor, sight straight along the pads of the disk brake mechanism. Slowly spin the wheel while you watch the rotor. Sighting along the rotor while turning the wheel

411 on your vehicle’s brake rotors | Car Care Tips

How much does it cost to fix a warped rotor? - Quor

Most likely they aren't warped but contaminated with pad material. The only option is changing the rotors to a better quality rotor. To continue to put oem rotors on, or machine the rotors, will just give you the same issue. Just replace the rotors with a good aftermarket. Drilled and slotted is of no benefit If your rotors are warped and your getting a wobbled pull when breaking, then replace them. They are probably too warped to be re-cut safely. If your breaks are just getting thin, then replace your break pads and see if you can get your rotors re-cut while your at it so you have a clean and fresh start If that doesn't fix it you've now got warped rotors. 2005 Accord EXL I4 AT w/Navi (of no use), new KYB front struts, JL Audio TR690Txi 6X9 in the rear. Also uses no oil The term warped brake rotor is used pretty loosely to define any brake rotor that isn't flat and parallel with the plane of rotation. But there are other things that can cause brake pedal pulsation and there are ways that rotors can distort that don't always produce pedal pulsation, but do affect braking A. The only time you'll need to replace your brake pads and rotors is when the pads are worn and your rotors are warped, though that doesn't happen often. Rotors are engineered to last about.

How to Diagnose Warped Rotors on your Car - YouTub

Disc thickness variation— warped brake rotors What is disc thickness variation (rotor warp) and how to eliminate it. Disc thickness variation (DTV) is a brake rotor condition where opposite faces of the brake rotor accumulate an extra thickness of brake friction material or thinness due to uneven wear.. When a brake rotor develops DTV it causes brake pedal pulsation during braking Warped Rotor. A warped rotor can be a cause of a warped wheel hub. Take note, these 2 parts rely on each other in order to function. If you have problems with your rotor, there's a definite chance you may encounter problems with your wheel hub. If the warped rotor is not properly fitted, this could affect the performance of the system First time was 34000 mi. The dealer milled the rotors and things were fine. Now at 53000 mi, it's happening again. Now, the dealer says the rotors are purple from overheating and therefore warped. Toyota says rotors aren't covered under any warranty, but rotors should last more than 20000 - 30000 miles. My '89 Camry, rotors replaced over 200000. Repairing Warped Brake Rotors. Brake rotors are important parts that help to keep you safe as you are driving your Mercedes. If your brake rotors become warped, then it is time to have them serviced at St. Matthews Import in Louisville, KY.We have multiple locations including our Hubbards Lane location for automotive service and repair.We are family-owned and operated for over 45 years, and. Measuring. How to Fix a Warped Guitar Neck. Step 1: Removing the Strings from the Fretboard. Step 2: Taking the Frets off the Fretboard. Step 3: Removing the Fretboard. Step 4: Making Your Straightening Jig. Step 5: Using the Straightening Jig. Step 6: Using Heat for the Neck. Step 7: Put Your Fretboard Back

How to Check Runout of a Warped or Worn Out Brake Roto

Replace warped brake rotors on your car. If the steering wheel on your car shakes when you apply pressure to the brakes, you probably have warped brake rotors. In this video, you'll learn how to access your brake rotors, remove them, and install new working ones on your front brakes Rotor problem on my 2013 Honda pilot at 8,000, 22,000 and now again at 30,000 miles. Rotors are warped and on braking from high speeds the front end shimmies. I got many excuses from Honda, everything from the way I'm driving to yeah, honda knows about the problem, but hasn't put out any recall or notice stop and go affect when braking. and vibration . dealer said front brake rotors had runout on them and resurfaced rotors . that fix the pro. but again at 26000 getting back to the same problem. the manufacturer definitely has gotten a cheap supplier for these rotors and is making the consumer pay the bill for resurfacing.Also the replacement of the rotors eventually a lot sooner than normal

Squeaky rear brake - uneven rotor wear

Bolting a rotor to a warped hub will always result in brake vibration. The same will happen if any rust from the hub surface is not removed before fitting the rotor. THE SOLUTION: After fitting a rotor, always check for rotor run-out using a dial gauge. If the run-out is out of tolerance, re-fit the rotor in an alternative position until the. 162 Posts. #2 • Apr 30, 2012. yes it's fairly common to have parts of the rotor slightly warped. You can try bending it back with a special too, park tool makes but its not that easy. All calipers should have a way of adjusting to compensate. Simply unscrew the two bolts slightly and adjust until they aren't rubbing As rotors warp with age, pads no longer make constant contact with the rotors all the way around, and this reduces braking ability. 6. Other obvious problems such as cracks or chunks missing. These visible problems are signs of an unsafe rotor and definitely mean it's time to replace Resurfacing Your Rotors Sometimes your rotors may need to be resurfaced because they have worn unevenly, warped from heat, or become damaged by worn brake pads or pitted from corrosion or rust. Resurfacing rotors removes some of their metal, until the surface is smooth and even again