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      04-20-2019, 05:52 PM   #188
GTony
First Lieutenant
Australia
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Drives: 2015 X3 F25 XDrive 28i M Sport
Join Date: Nov 2012
Location: Queensland

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Quote:
Originally Posted by rousslang View Post
I'm curious to know what the widest rim and tire combination is that is verified to fit the X3 M40i. My car came with run-flat mixed performance summer tires, though I was told by the dealer that I'd get all-seasons. Two weeks ago, we drove through a vicious snow storm in Southern Oregon, and since my car was near new (500 miles), I had just assumed the tires were as they said. NOT!!!! Car did not slip once in 4 hours, though dozens of cars and trucks were disabled on the side of the road, off the road, and smashed into the guard rail.

I have found this comparison online - first set is the stock front and rear, and the second set is the wider, potential replacement. Fit for the latter is not verified. Any help is appreciated.


Diameter Tread width Rim
275/40R20 28.7" 10.8" 20 x 9-11"
315/35R20 28.7" 12.4" 20 x 10.5-12.5"




245/45R20 28.7" 9.6" 20 x 7.5-9"
275/40R20 28.7" 10.8" 20 x 9-11"
Shouldn't these be the other way around or are the 275/315 Original Fitment.
Mine are 20" F 245/40 R 275/35 and I'm looking at your 45/40 Profile on the 245/275 and Wider Tires.
Appreciate 0