For tires, I hear 215/40/17 fit fine, but just need to wear through these very decent Pilot Sport A/S 3's first, then maybe a 215/40/17 in the Federal 595, or even some cheap sticky all seasons, we'll see, as I do need a decent cold rain tire too... I just wish the Ford system could be set to Sport Mode by default, I hate having to remember to push the button EVERY time I simply don't want the stock system to kick in before the Stratified... And the RMM is a 75a, a little stiffer than Cobb and if after a couple of weeks of settling it still has too much vibe for me I'll have Stratified modify my tune for 1000 RPM idle... But also, since I do havea '17 with the bidder front sway bar, stiffer/thicker rear torsion, hopefully won't have to mess with much else than the traction bar!