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      01-19-2023, 03:08 PM   #18
California209
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Drives: BMW F30 328i
Join Date: May 2020
Location: Stockton, CA

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2018 BMW M5  [0.00]
Quote:
Originally Posted by apsuard View Post
295/35 and 305/35 setup looks killer.

I’m going 285/35 front with 305/35 rear on mine. Will try that first on 20’s and next setup will be 21’s
Just a little advice if the tire shop didn't already explain but OE tire size is 285/35/20 rear and 275/35/20 front. The wider the tire 285, 295, 305 that also affects diameter so you don't want a bigger diameter than the cars speedometer is calibrated for plus who wants to raise the car I'm trying to go down lol.
So 305/35/20 is way to big you want diameter to stay as close to OE specs as possible.
Look up tire comparison calculator.
305/35 would be roughly 1.9% bigger diameter and almost 2in circum. that's quite a bit. Problem is can't go down from 35 to 30 on sidewall it would be way to small .
295/35/20 is your best bet at only about .7% bigger diameter and .8in circum.
Maybe you know this but just in case.
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