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      02-02-2014, 02:13 PM   #5
Finnegan
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Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

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Quote:
Originally Posted by The HACK View Post
Most of the major brands I checked require a 9.5" or wider wheel to fit 285/35/R18 sized tires.

Will it fit? Maybe. Is it smart to do so? That's a resounding NO. Those sidewalks will be pinched in too far for the tire to be effective, and may actually generate excessive heat and cause them to fail prematurely.
+1

Counterproductive, as is running a 275, for most tire types, on the stock rear wheel. Contact patch is compromised. Confirmed via pyrometer readings--load is on the middle of the tire and doesn't use much of the inside/outside. Recommend using "measured" rim as the guide for width, not min allowable.

A 265/35 rear on the stock wheel will outperform a 275 in terms of available rubber on the road for most street tires. In fact, some 265s have wider specs than 275s.
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