I'm still figuring out whether I like my F1 GS D3's...it was maybe a little cool for them at the Dragon...haven't played with the air pressure yet...but we did have them screamin' from time to time...I was hoping for better grip...but we will try her again this summer when I'm down in Marysville...sneek out to Dragon for at least one run...although she may see southern IN...before Marysville...these tire look agressive, and are very quiet, did well in the rain on the way to the spring Dragon...so, we shall see...they may get burned up on May 30th at US 41....LOL