Quote:
Originally Posted by snowbimmer
The M850, on the other hand is just the opposite: The fronts are a larger diameter than the rears
Front Dia: 26.76" Rear Dia: 26.50"
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And, again, did BMW engineer the M850 with the expectation that the front tires are to be taller than the rears?
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Something to keep in mind. Are you calculating the diameter from generic sized tire charts/calculators? That is not 'definitive' sizing for 'star' marked approved tires.
Also remember those are nominal sizes, not allowing for manufacturing tolerances, (even within the appropriate standards), can be quite wide. BMW could well be setting tolerances which may make front and rear RC (rolling circumference) for the OE tires different than it appears.