Quote:
Originally Posted by GoodGuyAvi
nice ! do you have any pics?
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If I am not mistaken, all 21" OE M40i rims are 8.5" and 9.5" wide.
The height of the 265/ and 295/ tiress might be ok, and may even fit under the car without rubbing, but you have to consider the
width of the tire on the rim.
A 255/40/21 needs a 8.5-10" rim. an 8.5" rim will work but at the min width
A 265/40/21 needs a 9-10.5", is 1/2 inch too wide for an 8.5 rim.
A 295/35/21 needs a 10-11.5" rim. it is 1/2 inch too wide for a 9.5" rim.
I think that the two widest formulas that one should go on the 8.5 and 9.5 rims:
255/40/21 and 295/35/21
255/40/21 and 265/40/21
...but should only be used with the acknowledgement to oneself that one is stretching the tire just a bit.
BTW, I believe that the X3M's that have 255 front, 265 rear have different sized rims and offsets than those on the M40i