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					Originally Posted by ryanwise  We are a distributor for both barnds and Ive run both. The Sumitomo ZIII is a great tire for the money and wears great. Tire Rack gave the tire a great review. But I found the tire a little slick for autocrossing or DE events. The Yokohama AD08 is much more expensive but the grip is unbelievable. | 
	
 
Yoki AD08s are very good tires.  Hankook RS-3 are every bit as good as AD08s in AX and DE for about 1/2 price.  Also available in 17s. 
 
Disclaimer:  I am not a tire professional I just play one on TV. 

  I also have been very fortunate to drive a fairly well sorted 2.5L Boxster that holds most of the track records in class around SoCal/Nevada.