Vibrations when braking
 

I purchased my 02 X 3.0 used and during the test drive didn’t really test the braking :mad: . After a few spirited driving sessions I noticed heavy vibrations when decelerating from speeds of 80-100mph range.

I’ve had the dealer and a local Midas (second opinion) check out the braking system. Although I have a ton of meat left on the pads and my rotors are well within spec, both agree that I need to replace both the pads and rotors in order to get rid of the vibrations.

The brakes on the vehicle I’m sure were never bedded nor was the vehicle driven by the pervious owner as spirited as drive.

QUSTIONS:
Is there anyway to resolve this issue without replacing both rotors and pads?

Thanks… :)

Discs and pads can cause this but also suspension lower arm bushes can be a problem also!!

The dealer check both and determined it was the brakes.

If the rotors were replaced and not run in/bedded correctly then I would say YES the dealer is pretty much correct. The surface becomes abrasive and warped causing the problem.

I think it's your pads problem, some brake pads doesn't handle at high speed and heat. Find out what pads do you have? Ceramic, organic, or metalic?

I would try resurface your rotors first before spending a big chunk. good luck.

warped rotors most likely

No need to bed in pads, that is an internet legend that simply will not die, I wish I could find ground Zero for that myth..... The proof that bedding is BS is in every new car. No new car manufacturer recommends or does “bed in’s” on new cars. If that was the case every factory would need a bedding in facility. I have spent a ton of time at the Toyota plant in Fremont California and I can tell you they do not have a bunch of people running around slamming on the brakes on new cars.

I have done at least 200 brake jobs and I have never bed in a job. With the exception of a couple jobs where the owner used junk parts I have never had one come back. I drive the car up to highway speed and check for vibration and squeak, that’s it.

Rant off, sorry

The solution is to replace the pads and rotors with OEM Jurid in the front and Textar in the rear. Use Balo or ATE rotors. Mount pads dry (non of that anti squeak orange or blue junk) and grease ONLY the tracks of the brake caliper frame.

Use dustless pads or no name rotors will have mixed results, the above formula will not have problems if done correctly.

Good Luck !

LOL!!!

Ok, so bedding the pad is BS
I was thinking of replacing the rotors and pads myself and at the same time upgrading the rotors to a drilled set and dustless pads.

http://cgi.ebay.com/ebaymotors/ws/eB..._promot_widget

Thoughts....

FWIW, BMW does not turn rotors. They replace them if they're out of spec so I would replace them. Those eBay "Brembos" could be the real deal and then again, they could be knockoffs. I have read reports of fake Brembos. I wouldn't risk it with something like that and especially with drilled rotors I can only imagine the havoc they could wreak if they are knockoffs.

Go with Zeckhausen. He'll hook you up with the good stuff. He's a vendor here too. http://www.zeckhausen.com/