Based on 50 miles our M sport on 19's with edc and run flats is firmer and noisier than the loan sport on 18's with no edc and non run flats.
I don't find the ride quality an issue, but I do think our car does get a bit noisy on poorer road surfaces.
Still early Days though and need to put some more miles on to reach any firm conclusions.
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'17 S1000RR , '19 M2 Competition HS
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