2010 2011 BMW 5 Series Forum F10
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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Wheels / Tires / Suspension / Brakes optimum wheel size
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      09-09-2010, 12:38 PM   #1
bm323
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Drives: 12.2 E92 M3 ZCP; 12.7 C63
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optimum wheel size

My 18 inch run-flat tyres were under-pressured upon collection (without knowing it) and I found my F10 with adaptive drive bouncy in normal mode and ok in sport mode. When the tyres were pressured correctly, I found the drive in sport mode better. Today, I increased the pressure to the higher recommended pressure ie for 5 persons, although at different times, it was only myself, 1 and then 2 passengers. The drive was the best.

One forummer appears to find his 18 inch non run-flats with M sport suspension fine http://f10.5post.com/forums/showpost...75&postcount=3

A forummer who has 20 inch run-flats with M sport suspension says "Driving on the highway is very comfortable, driving on the local roads is a party" http://f10.5post.com/forums/showthread.php?t=405658

Another forummer found 20 inch run-flats with adaptive drive lose grip on some surfaces http://f10.5post.com/forums/showthread.php?t=422882

This leads me to believe that the optimum wheel size for an F10 (with adaptive drive in sport mode or M sport suspension) is 19 inch for run-flats.

Robin Hood finds his 19 inch run-flats with M sport suspension fine http://f10.5post.com/forums/showthread.php?t=426668
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