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      Yesterday, 11:55 AM   #1
EnVe46
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Brake pulsating

This topic has been beat up and I've read a decent amount of the threads. Some say it's deposits on the pads some say it's from letting the pad sit on a hot rotor. Now my pads have a ton of life left but I do notice a lip on the outer edge of the rotor showing the wear. I haven't got a caliper gauge yet but I'm pretty sure they are due for replacement at 60k and previously raced on the ring. One thing I couldn't find if replacing the rotors only will be ok? I suppose if there are deposits on the pads it won't fix my issue. I'll snap some pics shortly but just looking for advice on swapping rotors/pads together or get away with rotors only. Will be daily street driving no track use for now.
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      Yesterday, 12:17 PM   #2
JsL
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You can get a set of oem pads for about 140USD.
Probably safer to just replace them and not have any doubt about the degraded performance of your pads, which is a critical safety item.

BMW E9X M3 front pads- Textar 2331207
BMW E9X M3 rear pads- Textar 2373001
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      Yesterday, 12:34 PM   #3
dparm
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As long as you are not changing to a radically different pad compound, changing just the pads on an existing rotor, and vice-versa.

I don't remember precisely, but I don't think the OEM pads actually go all the way to the edge of the rotor face, so a slight lip is inevitable. You should be able to measure rotor thickness without taking the wheels off.

I would try re-bedding to see if you can scrape off some of the deposits. Worst case is that it doesn't improve and you end up replacing stuff anyway. Recommended method:
https://www.zeckhausen.com/catalog/i...Path=6446_6443
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      Yesterday, 12:40 PM   #4
EnVe46
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Quote:
Originally Posted by dparm View Post
As long as you are not changing to a radically different pad compound, changing just the pads on an existing rotor isn't really a problem. (e.g. going from OEM pads to a race-only pad is a no-no)
So putting new rotors on with these pads is ok? I'm not sure what pads they are as I just purchased it so I guess I'm answering my own question and should just replace everything
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      Yesterday, 09:16 PM   #5
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you've got some pad transfer there, so you'll have to bed them in.
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