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      10-21-2010, 12:18 PM   #24
v3.0si
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Drives: '08 Z4C 3.0si
Join Date: Sep 2010
Location: midwest

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Quote:
Originally Posted by Dubbedown View Post
but if i run 235, what's the lowest offset i can go on a 8.5" in the front, 45mm? maybe i will go staggered after all....
8.5" x et40 = outer movement of +13mm (closer to fender)
= inner movement of -1mm (farther from strut)

inner tire clearance should remain the same as stock, outer clearance should be the same as moving to your E9x staggered set (197's right?) from stock. because you're increasing the rim width to 8.5", the center line of the tire/rim will move closer to the center of the car by roughly 1/8" compaired to the E9x 197's, BUT it's still 1/8" GREATER track width than the stock 8.0" x et47.

so...

you'll gain contact area, relieve bearing stress, shouldn't rub, and narrow track vs. the 197's

or...

you'll gain contact area, slightly stress bearings, shouldn't rub, and widen track vs. stock

holy smokes... i need more coffee!
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