I really liked the 18x8 Ultraleggeras I had on my Z4M, noticeably lighter than the BMW wheels to impart a slightly better ride and slightly crisper handling. I also used MPSS tyres on that car, with great results on the road, but not too good on the track compared with the extreme performance tyres that I used (Dunlop Direzza Star Spec), but I would pick Bridgestone RE71-R tyres now if doing track days as well as road use. I would pick MP4S tyres now if just for road use, as the MPSS is not quite as up-to-date in its capabilities.
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