Quote:
Originally Posted by MacLean_007
I believe the M8 and M850i have the same width in the rear. I was told that 11.5” with 305 Michelin PS 4 would fit perfectly. One has to remember that not every tire will look/sit the same.
|
Per buying guide:
M850 is 8" fronts, 9" rears
M8 is 9.5" fronts and 10.5" rears
Quote:
Originally Posted by bobz007
Hey guys, I’m trying to put M8 813 wheels on a 850i coupe… given the this convo, it sounds like it’ll fit without any modifications?
I’ve spoken to 4 dealerships and they’ve all scratched their head on this…
|
My M850 looks like the rear wheels could extend out another 15mm or so. The rear OEM 728 wheel has an offset of 41mm. The M8 813 wheel has an offset of 28mm. So, those 13mm will fill the gap, but you still have to account for half of the extra 1.5" on the new wheel width - another19mm. The willtheyfit.com site showed the 706 outer ri poking out an additional 32mm.
I'm looking at the same problem. Only I have M5 706M (same width and offsets as the 813) wheels. Trying to use my old M5 snow wheels as M850 snow wheels. I don't think it will work. The BMW website even shows the M8 axel track is 10mm narrower on the rear axel and the overall axel width is 10mm wider (outside wheel to outside wheel). So, there's just more room for the bigger meats on an M8 under the fender.
My other question is how much space is between the OEM wheel and the suspension strut. Some of this could be solved with more offset if the wheel can just snug up closer to the strut.