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      03-24-2024, 01:52 PM   #13
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Drives: 2019 X3 M40i
Join Date: Oct 2022
Location: W. of Denver

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Quote:
Originally Posted by TXGrey View Post
Could be wrong, but don’t believe it’s standard on M-lite vehicles (I.e. M40i), just an option. I’m sure it’s probably standard on actual M cars tho. It was one of the only options I didn’t care about when I was building, but I ended up buying a dealer spec that was 97% of what I wanted (and the M Diff was already on their spec, so I ended up with it).

I too read about the mismatch issue… and also their mention of using incorrect TIRES as well. But I concluded that stock sized 19 inch option with All-Season tires would be acceptable since I knew there were plenty of forum members running this setup. I haven’t looked in a long time, but I want to say the owners manual actually even says the M Diff is only supposed to be used with summer tires, or something like that. It’s really weird.
Apparently it's standard on the M340i.
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