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      09-19-2013, 10:06 PM   #6
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Drives: 2006 M Roadster
Join Date: Mar 2011
Location: CA

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Quote:
Originally Posted by drbvac View Post
Thanks Finnegan - if you ever need any advice on a root canal let me know,

ARC - 8 Front 18x8.5 - et 38 Tire 245/35 -18
Rear 18x9.5 - et 22 Tire 275/35 -18

Sound right this time - I noticed that the offsets for the Arc-8s have changed over the last while 0
You want:

245/40
275/35

245/35 would be -4.7% smaller than stock, which is way too small (anything over 3% is said to cause issues with the DSC).

For reference:

245/40 -0.99% smaller than stock
275/35 -1.74% smaller than stock
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