i just did a comparison between the pirelli PZERO NERO, dunlop SP Sport 9000, and sumimoto HRZ II Z-rated tires from www.tirerack.com. i'm runnin the sumimoto's on my car and you can't beat em for the price. they're about $30 cheaper per tire but the ratings are about the same. the sumimoto tires out handle the dunlop and pirelli tires, have a better dry traction rating, and have a better treadwear rating. just a little sometin for you to think about.