Rear rotor damage?
11-04-2019, 11:58 AM
#2
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That's been doing that a long time. Check your pads and caliper.
11-04-2019, 12:01 PM
#3
That's the thing I have a pic of that wheel last month and it isn't there , and I've driven maybe 500miles in that time. Probably take the wheel of and check it whatever it was is still there . Do you think the rotor needs to be replaced?
11-04-2019, 12:11 PM
#4
The groove in your rotor is oxidized which is a clear indicator the etching has been there for some time. Also since the oxidation is present its also an indicator the lodged debris is likely gone. I would probably leave it as is and consider how many miles are on the vehicle. Are the brakes and rotors original? Has your braking performance diminished? Likely not..... If you do decide to replace the rotor, also change out the pad and consider the overall mileage and whether it warrants a complete brake job.
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poorshoeless (11-04-2019)
11-04-2019, 12:18 PM
#5
Three Wheelin'
Most likely the scoured rotor happens on the front. A small piece of pebble got kicked up and got caught between the rotor and pad, thus scouring the rotor. You probably wouldn't find the debris since it was dislodged. This condition rarely happens to the rear brake rotors. I would live with it because it might look imperfect cosmetically, but it shouldn't affect functionally.
11-04-2019, 01:32 PM
#7
Thanks for the replies guys, great point of the debris prob being gone since its oxidized. I haven't noticed anything negative on braking so I will probably live with it since the rotors only have 15k miles on them.
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11-04-2019, 01:48 PM
#8
Burning Brakes
Do you have a caliper (measuring tool)? Have it measured and compare with current wear and minimum thickness.
If it was me I would replace it. Steel rotors are cheap and easy to change. I advise you change both...
If it was me I would replace it. Steel rotors are cheap and easy to change. I advise you change both...
11-04-2019, 04:10 PM
#9
Rennlist Member
Replace rotors and pads on both sides of same axle, to eliminate uneven braking.
11-04-2019, 05:27 PM
#10
You probably don't have to replace it. But if you do, replace rotors and pads on both sides as others have mentioned.
11-04-2019, 07:09 PM
#11
Had something very similar when car was almost new. Dealer pulled the pads for me and inspected, they were fine. Suspected a piece of debris stuck and then dislodged. 7K later groove all worn out. Apparently this is an occupational hazard on drilled rotors and less than perfect roads.
Last edited by Nm2far; 11-04-2019 at 08:28 PM.
11-04-2019, 08:03 PM
#12
I just ordered a pair of steel rotors to convert to big reds, I was a little surprised how expensive steel rotors can be. Over $500 each. Its been years since I have owned a car with enough miles to need brakes, so it was a surprise to me.
11-04-2019, 08:28 PM
#13
The groove in your rotor is oxidized which is a clear indicator the etching has been there for some time. Also since the oxidation is present its also an indicator the lodged debris is likely gone. I would probably leave it as is and consider how many miles are on the vehicle. Are the brakes and rotors original? Has your braking performance diminished? Likely not..... If you do decide to replace the rotor, also change out the pad and consider the overall mileage and whether it warrants a complete brake job.
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Rennolazine (11-05-2019)
11-04-2019, 08:46 PM
#14
Three Wheelin'
My rear passenger looks similar, had a small pebble wedge itself in one of the holes in the rotor. Just keep going until you need new pads and then replace the pads and rotors on the entire axle as others have mentioned.
