Thx Venomiss,
Hou99GTS, My use is for Time Trials, where I generally run 2-3 laps per session, and then after a weekend (sometimes after a third day) I put on a new set. Still lots of good laps left in the takeoffs, but I personally don't use them because I like to have the best laps the tires can give. That is when they are stickers, and for about 4-5 cycles. They are good for about 2-3 laps on an avg 2 mile, 10 turn track, before the times start to fall off (one or two sec a lap). The advantage is they are ready to go after a few turns at warm up speed. If you are just out for fun or DE track days (where sec's won't matter), then these are more than enough tire for you. New tires are kinda expensive, albeit Hoosiers or PSC's. If you don't want to waste your PSC's, these tires are a very economical alternative. FYI-New Hoosiers are approx. $440 for the 345's and $320 for the 285's=$1540/set!