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Re: 19inch rims...vibrations???? (archive)

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Posted by Bob ///M3 on April 28, 2000 at 15:33:51:

In Reply to: 19inch rims...vibrations???? posted by ///M Performance on April 28, 2000 at 14:56:53:

Your vibration problem may not be caused by the rims themselves but by the super low profile tires you have mounted. There's not much sidewall to cushion the vibration caused by a temporary "flat spot" of the tire which is caused by parking the car. This is somewhat common with low profile tires and becomes even more prevalent with larger wheel diameters and therefore shorter sidewalls.

You can check your tire/s by eye-balling them to see if you really do have a flatened spot by putting the wheel/tire combination on any balancing machine and look for a flat spot when it turns. Placing an object such as a screw driver very close to the tread as the tire turns will help you see any low spot (flat spot) in the circumference of the tread. Some flat spots will not re-shape themselves while others will.

If this is not the problem, you might be having a hard time just balancing the tire and wheel. You might want to have the tires and wheels spun balanced while actually on the car. This is the best way of truely balancing the entire wheel, tire and brake rotor as a rotating mass.

Hope this helps.

Bob ///M3

: i have 19 inch rims on my car and i have been experiencing steering wheel vibrations after speeds over 75mph. i was wondering if this was because of the large rims or that the rims were made from a poor quality material. let me know what you guys think.

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