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Best tyre and wheel combinations

The standard tyres on the rear of my 3 Series Coupe will be 255/35 R18 whereas on my current car I have 255/30 R19s.

Will the overall diameter of the wheel and tyre be identical, or will the R18s be smaller? Reason for asking is that I am hoping I will be able to squeeze some Autosocks on my new car, whereas I concluded it was impossible on the old one as I could not get my hands into the wheel arches.

Asked on 8 June 2011 by b6waf

Answered by Honest John
Probably about the same. Slightly better ride quality from the 35s.
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