Quote:
Originally Posted by JoeFromPA
Yep, no problem. It's funny, heavier tires are definitely not what you want from a performance standpoint - but I'm willing to bet that weight is going into an outstanding carcass and sidewall that will hold up better to abuse AND absorb better imperfections.
Though the total unsprung rotating mass is less with the 18s, I'm betting the fact that the 18s tires are heavier will balance it out considering they are a greater distance from the axis.
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Or it could be that run-flats are heavier than a standard construction tire.