Quote:
Originally posted by MrM3@Nov 7 2004, 12:12 PM
i think theres a good chance its your wheels. plastic hub centering rings will never make the wheel fit as good as a hub centric wheel. i think it's worth trying to fit new ones either a size smaller, a size bigger, or just the same size if your current ones are starting to wear away.
i had aftermarket wheels for a short period and sold them because i couldnt get rid of the 50mph vibration (and a couple other reasons). i, like you, had the tires balanced multiple times, had 2 or 3 allignments done, new suspension, and still couldnt make the car feel right. When i eventually sold the wheels the new owner said he bought some new hub centering rings for them and the vibration had all but dissappeared. I didnt really care at that point because i had no plans of keeping them with or without the vibration, but I would deffinately try buying some new 57.1mm hub centering rings before you start messing with more major things like tie rods and strut mounts
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MrM3, Thanks for the suggestion on the plastic rings. After reading your email, I check all 4 wheels and found this:
1. Both the hubcentric spacers and the plastic rings on the front end had a sloppy fit. With a feeler guage, the plastic ring measured 12 thousands of an inch gap and the hubcentric felt about the same. The worst the wheel could be off-center would be 24 thousands of an inch plus any wheel distortion. I shimmed both up with tape.
2. The rear hubcentrics were fairly tight, but the plastic rings were as loose as the front ones. I also shimmed these up.
I tested my e30 to about 60 MPH down a back road and it seemed very smooth, without any vibration.
Thanks for your help, I think you found the problem!
