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      03-12-2007, 04:24 PM   #17
bnj
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Drives: e92 335i
Join Date: Nov 2006
Location: Helsinki

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Quote:
Originally Posted by epiphone3 View Post
switching to non-runflats significantly reduces the weight of the wheel-tire combination.
I'll begin with your first claim: How much is a significant weight reduction? Then, how much is exactly the weight reduction in a tire that is exactly the same, except being non run-flat instead of run-flat? Take for example potenza RE050A vs RE050A RFT 225/40-18 (typical tire in a Bmw from factory).