RPF1 in 17 x 8.5 is one of the lightest on the market. PF01 is supposed to be stronger, but is heavier and not needed unless you hit things a lot. Most of the used GA rims are only 8" wide. The extra .5 gets the sidewall straighter and helps with stability. With the 5.12 gear and the 17 you will not run out of gear even at Daytona.