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Brake Dragging Sound in Reverse

HF Bass

TMO Intermediate
76
51
Dothan, Alabama
HPDE
3-5 Years
After my last track day I have noticed sometimes when I put the car in reverse and start to back up it sounds like my driver rear brake is dragging. I haven't seen any issues with my actual caliper, or any oddities on my rotor. There are no issues braking at low speeds or high speeds. All the suspension components look fine, and I can't see anywhere the wheel is dragging on anything. Could this noise be coming from the diff and/or axles? I know this is kind of an odd question, I'm just not sure where to go from here. I have the stock brake setup in the rear with Carbotech XP10s, and I don't hear/feel any dragging other than reverse occasionally. Thanks
 

APEXRaceParts

Race Proven, Street Approved
Supporting Vendor
526
665
Bay Area, CA
HPDE
5-10 Years
This also happens to mine randomly, I've even replaced everything back there (not because of the sound, just needed to) and it still comes and goes. Figured it was the pads/eBrake so glad to hear others are experiencing similar.
 

67GTA

TMO Race
249
230
SoCal
Completely normal as many others have confirmed, and I will note the sound becomes next level with the GT500 caliper brackets and larger rotors. The stock setup has an “anti-moan” bracket to help dampen some of that noise, however the GT500’s didn’t have a similar bracket. I usually just tap the brakes when the noise starts with a quick release and it will calm things down.
 

JP X

TMO Beginner
7
8
Raleigh, NC
HPDE
Under 3 Years
After my last track day I have noticed sometimes when I put the car in reverse and start to back up it sounds like my driver rear brake is dragging. I haven't seen any issues with my actual caliper, or any oddities on my rotor. There are no issues braking at low speeds or high speeds. All the suspension components look fine, and I can't see anywhere the wheel is dragging on anything. Could this noise be coming from the diff and/or axles? I know this is kind of an odd question, I'm just not sure where to go from here. I have the stock brake setup in the rear with Carbotech XP10s, and I don't hear/feel any dragging other than reverse occasionally. Thanks
When you say "dragging", what did it sound like? metal-on-metal? Or brake bad not releasing from the rotor? And I assume that you are not setting the e-brake after tracking.

I had a sound like metal-on-metal (sounded like sheet metal scraping) pop up twice a couple of years ago. I took everything apart, could not find anything, it went away. Was not while I was at the track. I guess something got wedged in there somewhere and worked itself out. But twice, about 2 months apart? Seemed odd. I was confused, but after about 1-1/2 years, hasn't happened again. Unrelated, but the one issue I see repeatedly on track days is that my backup camera cuts out every afternoon, without fail, that I am at the track. 🤔
 

HF Bass

TMO Intermediate
76
51
Dothan, Alabama
HPDE
3-5 Years
When you say "dragging", what did it sound like? metal-on-metal? Or brake bad not releasing from the rotor? And I assume that you are not setting the e-brake after tracking.

I had a sound like metal-on-metal (sounded like sheet metal scraping) pop up twice a couple of years ago. I took everything apart, could not find anything, it went away. Was not while I was at the track. I guess something got wedged in there somewhere and worked itself out. But twice, about 2 months apart? Seemed odd. I was confused, but after about 1-1/2 years, hasn't happened again. Unrelated, but the one issue I see repeatedly on track days is that my backup camera cuts out every afternoon, without fail, that I am at the track. 🤔
I never set the ebrake while I'm at the track. Sounded like something that didn't want to rotate or hadn't it a good while. I'm pretty positive it was the e-brake. Since @Apex3V commented I have yet to hear the noise again now that I'm paying more attention to the ebrake or not using it entirely. When I first heard the noise I thought a rock had wedged itself into my caliper. I wound up disassembling as much as I could looking to no success.
 

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