For those considering coilovers for very good street and track performance, I understand double digressive shocks are excellent. AST and Moton use this technology on many of their coilover set ups, which get great reviews. I don't believe either company has offered their coilovers for the F30--yet. I do think they will be offered sooner, rather than later, if enough people request them
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SCCA & Midwestern Council W2W, '91 Spec Miata, '07
NASA TTD Champion, Midwest, '99 M3, '09
Midwstrn Council TT Champion, BS, '10 GTI, '10 &'11
Midwestern Council TT Champion, BS, ‘17 BRZ, ‘19