The W140 wheeels are desinged to use a 14mm lug bolt and the W210 uses a 12mm lug bolt. Contrary to what has already been posted it is inadvisable to use 12mm bolts on a wheel the requires 14mm bolts. Also the bolts in question use a ball seat with a different radius which will not have the proper contact area. This is a very bad idea. I apologize for my delay in responding. The main reason that The Tire Rack supports and sponsors these forums is to reduce or eliminate false or incorrect information. I hope this answers your questions completely.
Agreed, but I did not suggest to use 12mm bolts on a wheel that requires 14mm bolts. It just ment to show what one of the requirements to fit would be. Personally, I would not do it, but Frank from this forum used W215 CL's wheels on his CLK.
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