Quote:
Originally Posted by cidair
I have.
My friend has the 20" and I have the 19".
Comfort/ride quality wise - slightly better with 19". Not that big difference that you would think.
A bigger difference is in grip levels. 19" ( higher sidewalls ) gripping better it seems. Especially when exiting a corner ( side force on the tyre ).
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Excellent. Thanks for the quick response. It makes sense that you'd achieve better grip with the 19"s. Glad to hear that you don't give up much comfort/ride quality with the 20"s. Since most of us may take our M5s to the track once a year or less, I'm thinking that 20"s are going to be a very popular choice.