Posted by Michael on March 04, 1999 at 17:26:19:
I HAVE A 98 VETTE AND I AUTOCROSS ALMOST EVERY WEEKEND IN A STREET TIRE CLASS. I HAVE BEEN RUNNING NITTO 555-EXTREME IN THE STOCK SIZE FOR MY CAR. THESE HAVE BEEN WEARING OUT VERY QUICKLY AND THE HANDLING IS NOT WHAT I HOPED. HAS ANYONE HAD ANY EXPERIENCE WITH SUMITOMO'S Z-RATED TIRES. HOW DO THEY PERFORM. HOW IS THE DURABILITY. I DON'T WANT TO HAVE TO GET NEW TIRES 2-3 TIMES A YEAR.