[upstate650]

Originally Posted by Wlodi

295?
From what I see here 285 is "the perfect match" .

http://www.willtheyfit.com/index.php...=10&offset2=32

What is the tolerance between front and rear?
Is it 1% or 3%?

Another question - how long do you drive on this setup ? No issues with the drivetrain?

255/35 and 295/30 ARE EXACTLY THE SAME DIAMETER. 0% difference. Because there is no difference in diameter, there is zero effect on drivetrain. don't use some generic calculator on the net for tires. Go to tire rack and look at the tires you would actually be using and their measurements - either the pirellis or the michelins probably.

Look, you can use whatever you want. I'm just telling you, based on experience, aesthetics, and science, that 255/35 295/30 is the perfect set up for the M5 wheels on an x drive 6 series. Good luck with whatever decision you make.