Why Tirerack? Because when I go to my local tire shop and ask them a price on a good tire (nothing they have in stock is good), they look up the price in a Tirerack catalog. Hmmm, why don't I just go there to begin with?

Tirerack is a wharehouse. They stock a wide variety of brands and types. Wheelmax has only 3 or 4 brands of tires. If they have what you are looking for at a good price, go for it. But never have I heard of any real sports cars carrying Toyos. Kuhmos are an excellent bargin tire, and they carry it at good prices. Yokohama? Must have a bad name in their customers eyes if they only carry the Avid H4. I can get Michelin, Dunlop, Bridestone, BFG, Pirelli, or Yoks, all at about the best prices you can find.

Still asking why? Price, selection service. There ar other places to buy tires/wheels, but none so comprehensive.