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Registered
Join Date: Oct 2001
Location: Round Rock (Austin), TX, USA
Posts: 1,212
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brake induced wheel wobble
I need some help diagnosing a problem.
When I lightly initiate braking at 60 mph or so, the steering wheel wobbles pretty excitedly. As I apply a little more pressure on the brake pedal, the wobbling goes away completely. Additionally, it doesn't do it every time, probably only every other time. When crusing down the road at any speed, there is no wobble, no indication of unbalance, only when braking. Any ideas?
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Paul. '11 R1200RT, '09 Buell 1125cr, '08 Suzi SV650A, '00 Suzi SV650, '97 328i (with sticky ass tires - I love this car). And the bikes I used to own: '68 Bultaco 100, '69 Honda CL450, '71 Kawasaki Mach III, '71 OSSA Pioneer, '72 Honda MR175, '72 Benelli 250, '75 Yamaha RD350 (then college), '83 Honda VF750F (then kids),'96 MZ Skorpion, '99 R1100S, '01 SV650, '94 Honda VFR750F and '04 R1100S w/Öhlins an' stuff, most wrecked. |
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01-24-2003, 07:30 PM
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Join Date: Jan 2003
Posts: 8
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One or both brake rotors might be warped. If you have the tooll to check the run-out (I think its called), there is some spec it should be within. I just looked in the bentley, but did not see what the spec is. See if they look worn, heat, cracks etc. Rotors are pretty cheap on these cars, so it is a good place to start if they look worn.
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96 328is |
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01-24-2003, 10:23 PM
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Join Date: Dec 2002
Posts: 6
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I had the same problem with my 92 325i changed the front rotors and it went away. So I would start there, rotors are pretty cheap any way
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01-25-2003, 08:58 AM
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Join Date: Jan 2003
Posts: 3
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before you go out and buy new rotors, this type of steering wheel wobber when braking from 60mph can be caused by several things besides out of spec rotors.
the first thing would be to check the torque of your wheel lugs. overly torqued or unevenly torqued lugs can also cause steering wheel wobble when braking. then, check for run out on the rim and also on the tire (both lateral and radial runout). a damaged rim and tire can also cause the same wobble at 60mph. for example, a dented rim, causes uneven wear on the tire, which results in radial runout on the tire, and thus steering wheel wobble. anyway, good luck! |
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01-25-2003, 04:47 PM
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Join Date: Jan 2003
Location: Ann Arbor, MI
Posts: 47
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I have the same problem with my 96 328i. It wobbles when I brake from around 25 mph an up. Would it be the brake rotor then?
Thanks
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1996 328i 1993 RX-7 |
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02-01-2003, 11:44 AM
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Senior Advisor
Join Date: Jan 2003
Location: state.....of confussion
Posts: 440
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All those ideas mentioned above are pretty solid, my money goes on warped rotors, but also have the lower control arm bushings checked. Do you feel any wobble when making turns?
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...96 Chevy heavily Modded such items include... lil' pine tree air freshner.... duct tape rht front arm rest (i'ts falling) zip tie holding in rear tail light.... hi concentrate windsheild washer fluid... sticker of Speedy Gonzales..rear bumper... |
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02-03-2003, 07:35 AM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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This sounds like either warped rotors or loose caliper mounting bolts. I'd first checdk the rotors with a dial insicator to see if there is any variation. Basically, any high or low spots would inidicate a warped rotor. But I'd also check the mounting bolts as well.
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02-03-2003, 07:59 AM
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Join Date: Mar 2003
Location: no. California
Posts: 8
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Don't forget to check the REAR rotors while you're at it. Had a similar problem on 1987 535iS and it was diagnosed as bas steering gear which was replaced under warranty; that didn't fixit, but replacing the rear rotors did!
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03-04-2003, 12:45 AM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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Any more word on this?
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03-04-2003, 09:31 AM
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