Quote:
Originally Posted by jmg
The difference is 1.18% or 0.315 inches. Some source say 2.5% is the max. I've heard 1%. Are there problems with this setup in the M440i?
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Not that I know of. It just seems a bit odd to me for BMW to emphasize the importance of having the tires be the same diameter, then selling the car with a tire combo that isn’t.
I’m still breaking mine in, so I’ve mostly been driving it like a stereotypical grandmother, and definitely staying under 4K RPM (per the owners manual).