For the street my Nitto 555 series tires in 255 40 17 and 235 45 17 give me outstanding dry weather traction (stripped the splines of the intermediary shaft in the tranny with them on) and the car corners very flat with no tire noise taking exit ramps at speed and has given me the control to perform high speed evasive manuveurs (moron on the freeway in a construction, needed to go around him between cones, accelerate, and then swerve through the cones to get back into the drive lane after he barrelled through an on-ramp construction stop sign and then jammed on the brakes in the travel lane because he realized he just pulled out in front a 65 mustang doing 65 that didn't have enough room to stop for him).
I like them alot. I can not attest to their life span yet since I only have a few thousand miles on them. I am suprised at the traction I get from them considering the RWHP of my car and at the price, I can afford to burn through them twice as fast as say a top of the line protenza.