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      12-03-2018, 08:07 PM   #50
Miko M
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Drives: 2020 M2C. 2020 X3M
Join Date: May 2018
Location: Wisconsin

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Quote:
Originally Posted by utsteve98 View Post
So given the current tire sizes, why would someone change the tire sizes from front and rear with a square set on an all-wheel drive car? I can see going slightly larger all around where the integrity of the ratio of diameters is preserved between front and rear tires. Unless you're running in 2WD all the time, this would seem to add unnecessary wear and tear on the differential.

Also, are you all switching tires on same rims or buying a whole new set of rims?
I got square setup on stock rims.

You can buy winter setup from bmw in square or Staggered setup.
What's important is rolling diameter, width of the rims doesn't effect the rolling diameter much as long as you stay within 1/2"

Differential will be fine. I have calculated and everything is fine.
I do have quotes for summer tires and rims that stays within 1% but they are 40mm difference in width from front and back.
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