i have a problem occuring... - BMW Forum

Shoyoas · 02-20-2009, 10:27 AM

my steering wheel wobbles pretty ruff when i apply the brakes and goes away if i apply brake with more force. what would cause this? i was told brake rotors need turning by two people who didn't even look at or drive the car. i believe it to be steering rack or control arm related but is this common?

PhatCat · 02-20-2009, 10:31 AM

Quote:

Originally Posted by Shoyoas

my steering wheel wobbles pretty ruff when i apply the brakes and goes away if i apply brake with more force. what would cause this? i was told brake rotors need turning by two people who didn't even look at or drive the car. i believe it to be steering rack or control arm related but is this common?

I would have said it's your rotors, but the fact that it goes away under harder braking doesn't make sense. I thought that generally, with more force(providing you still have plenty of momentum) the wheel would shake more noticeably if it was the rotors...but i could be a complete douchebag and be pulling this out of my ass. Anyone to back me up on this one?
I would think that something in your front end, as you mentioned steering rack or something like that, is more likely the case. There are certainly some minds in here that should be able to give you a much better idea of what you;re dealing with. Good luck!

Shoyoas · 02-20-2009, 10:38 AM

Thx PC. i had a '95 mustang gt with same symptoms. i thought it was the control arm bushings or wheel bearings. i replaced the bearings and no luck. so i took it to pepboys and they determined it was my inner tie rods. (they also stated that the bushings were a bit worn). i'm think i may be dealing with the same problem.

here's my engine bay. i'll try to take a closer pic i a few...

PhatCat · 02-20-2009, 02:33 PM

Looks nice and clean under there...tie rods kind of hit me as well...you never know though.

CosmosBlack · 02-21-2009, 04:49 PM

You should probably check out the rotors, and the control arm bushings, to begin with.

MEDSTUDENT87 · 02-21-2009, 08:05 PM

I Can Almost Gurrantee It Is The Rotors. Oopps Sorry For Writing In Capitals But I Am At Work And That Is The Way The Letters Write. Any Way I Had That Exact Issue With My '90 525i. It Would Shake Really Bad Under Braking And If More Force Was Applied It Would Go Away. One Thing Though Make Sure You Use Brembo Or Oem Rotors. I Went Through All Kinds Of High Performance Rotors And They Would Warp In A Matter Of Days! Once I Put Brembos On The Car She Brake Nice And Smooth For Over 6 Months Now. I Also Thought It Was Suspension Too But My Mechain Said It Wasnt And He Was Right. Good Luck!

Shoyoas · 02-21-2009, 09:05 PM

cool. rotors are the cheapest fix anyway so i'll do those first.

PhatCat · 02-23-2009, 10:46 AM

Good call, might as well upgrade them while you're at it! Maybe something slotted would be good for you.

Shoyoas · 02-23-2009, 01:47 PM

Quote:

Originally Posted by PhatCat

Good call, might as well upgrade them while you're at it! Maybe something slotted would be good for you.

i may avoid that. i read somewhere on here that u should stick with oem or brembo. most others warp pretty easy. anyone on here have experience with aftermarket vented/slotted disc?

PhatCat · 02-23-2009, 02:07 PM

Quote:

Originally Posted by Shoyoas

i may avoid that. i read somewhere on here that u should stick with oem or brembo. most others warp pretty easy. anyone on here have experience with aftermarket vented/slotted disc?

I have heard that really the only rotors to avoid are drilled. Slotted should be fine, or OEM...either/or. I do believe that Brembo sells slotted rotors for your car.