Just had a set of Goodyear F1 GS D3's put on the car. Holy crap what a diffeance from the EMT's. So much quieter, and the grip in corners is scary. Can't wait to really wring them out on some really curvy Va. back roads. I'm sure they will make a big differance when I return to Summit Point for some more track time. Anyone had these before? Opinions please.