$81 x 4 for a set of tires that would set me back $400+ anywhere else, plus free delivery in two (!) days, right before Xmas. I have no idea how you Tire Rack stays in business but I hope they'll be around for a long time.
Reason I chose this business:
A torn tire was a reminder that the entire set is begging for replacement, and my cousin recommended your site.
The site might be legit but their "buyer protection" is a joke. Sellers will keep sending nonsensical responses to a dispute until the protection expires. I hope the credit card operators will eventually run out of patience and stop abetting this tiresome scam.