V12's...38.5 psi ft, 35-35.5 psi in rears (235/40-18's on RX-8 rims, 08 MS3)...Koni FSD's with stiffer rearSB..great dry tire and decent in heavy wet if speed toned down a bit in higher speed curves. Kumho XS's in same size a tad better, better turn in and never squealed in protest like...