Quote:
Originally Posted by kern417
I don't think the difference from stock matters. You just need to make sure the fronts and rears aren't too different. If both are smaller or taller than stock it's not that big a deal if both diameters are similar.
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It does. Like I said I had vibration issues with 235/275 -> so I discussed that issue with BMW technical support from Munich and they told me that positive deviation is not good for the xDrive and you should always go out from stock. Which also made sense in retrospect because I had no more issues when I put on 235/265.
Quote:
Originally Posted by Smee
my issue with 235/265 is unless they wear evenly and you change all 4 every time you are at risk of smashing the 1% rule
a new 235 with a half warn 236 will be closer to 2% rolling diameter difference
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But that counts for every tire combination my friend. BMW says you should never have more than 2mm difference in profile front to rear.
So if you have to change tires you should always change all fours. If you don’t follow that rule you will have problems with no matter what combination, even stock lol.