I'm considering purchasing a 98 328 but found something minor, but troubling; is that under power the steering wheel does a slight shimmy. (Not real bad... ) I asked the sales person whats up and he said it's because all BMWs have the issue when 18in wheels are installed. Knowing something about physics this seems lame that BMW engineers haven't resolved or accounted for this problem. There is no exaggeration during braking and it's not much of a problem above or below 40Mhp. I think the wheels are out of balance yet he states that they were just balanced a week ago. Whats your thoughts?
the tires could be unbalanced(still), out of round, or the center bore of the wheels are not the correct size for the 328s hub (<-very common and is the most likely cause). if bmw did not make the wheels, or if they werent made exactly to bmw specs, its stupid to blame the car for a wheel shimmy problem
yeah, I would tell dealership to put a different set of wheels on it and let you test drive it then. If it is still there, you know its the wheels. If not, its something like alignment. If its a good dealer they should accomodate you and change the wheels out though.
__________________ <span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>
Good luck. MAybe even check the lower control arm bushings, usually the shimmy happens at higher speeds but 40 isn't unreasonable, and this is a common problem in e36s (non M)
__________________ PRESIDENT OF THE OVER 10 YEARS OLD AND UNDER 100K MILES CLUB
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I had this on my car, first it was the lower control bushings, I replaced mine with urethane ones. Then it was my inner control arm ball joints, so I just replaced the control arms. It fixed it.
Start with the cheaper solutions first, get the wheels rebalanced, then see if there is a lot of deflection in the lower control arm bushing. Lift the front of the car, see if there is any noticable play in the ball joints, tie rods, wheel bearing, etc, etc.
It's not an uncommon problem, but not impossible to fix either.
__________________ Nelson Papel
1997 Madeira Violet 328is - Carbonio Intake, Racing Dynamics exhaust, fan delete, ASC delete, M50 intake manifold, M3 Cams, Eurospeed/AA software, 3.38LSD, M3 f&r brakes + MC, Bilstein PSS, Eibach swaybars, BBS RK 17x8" wheels, Toyo T1R (235/40R17) tires, Racing Dynamics K55 kit, full euro lighting, 4300k HID lows, etc..........
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