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  1. Running 18x8s all around for the summer... is it a terrible idea?

    E39 M5 and E52 Z8 Discussion
    So I have four 18x8s for winter wheels, and was considering buying General Exclaim UHPs for the summer. As I'm sure you all know, the car is staggered stock. What kind of noticeable differences am I looking at if I buy four 245/40/18 UHPs (if I can even find them... Tirerack is sold out) and...