Tirerack will heat cycle your tires for a fee. It makes it easy because then they get to rest during the shipping time. I have used the service, and had them shaved and can recommend it. I have found that shaving Kumho race tires to 4/32" and heat cycle to work the best. If I leave the tires at full depth, I lose usable grip long before the tread is gone. At 4/32" the grip and tread go at about the same time.
Respectfully,
Andy Hohl
