Quote:
Originally Posted by MidtownMike
RC is rolling circumference. Especially on xDrive vehicles it is important that they are identical.
Having the same tires on different width rims is going to stretch/pull the tires harder on the wider rims, which may affect RC.
|
Adding to the above, the 225 on an 8.5" rim is at the limit of approved rim width (ETRTO standard), so is very stretched. RC for that size is measured on a 7.5" rim.
Saying that, some users do get away with that fitment. I do sense it can be a gamble, "some do, some don't", apples.