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2010 2011 BMW 5 Series Forum F10 245/35/20 F w/ 275/30/20 R is an OEM sizing for xDrives |
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05-25-2021, 10:36 AM | #1 |
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245/35/20 F w/ 275/30/20 R is an OEM sizing for xDrives
Was browsing the owner's manual for tire sizes and noticed that 245/35/20 and 275/30/20 are a listed OEM sizing for xDrives. If you calculate it, it's actually a -1.1% difference, with the fronts being taller than the rears, which breaks the conventional wisdom of "xDrive = <1% difference". Any theories? My personal one is that the front of the car is heavier, which squishes the fronts more and brings it within the 1% tolerance range.
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05-25-2021, 06:09 PM | #2 | |
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Quote:
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05-25-2021, 07:52 PM | #3 |
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I've used this setup for about 40K miles before without any issues. I do hear a little more "gear" noise compared to non staggered . I switched to M5 wheels with 255 and 295 later and the noise is less so it does matter a little but won't destroy your drivetrain
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05-26-2021, 10:07 AM | #4 |
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But wouldn't the math just not work out for 245/35 and 275/30? Unless they fudge the sidewall height slightly to match them?
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