Quote:
Originally Posted by 8262S
Wilco, but they would still be the same diameter tire as a lower profile 19.
I take it there is no issue with different tire size and the M3 AWD system? Must be bc they offer 19/20, but can people mount what they want without any drivetrain issues?
As a WRX owner that is a no go and is bad for the AWD system.
|
My understanding is that there are absolutely potential issues messing with the tire sizes for the x-drive. Differences in the overall diameter/circumference/revs per mile of the tires - overall differences, differences side to side, and differences front and rear, can all cause issues. I believe there is an official BMW spec as to the max differences - I don't know what that spec is. Those issues aren't unique to Subaru's AWD system.
That is likely a large part of why many people chose to go with the BMW-recommended winter sizes (square 275/35 19, which is the package offered by BMW dealers on the 829M wheels).
If I had an x-drive (I don't), I would personally likely stick with BMW-approved sizes for the duration of the warranty.