If you're needing a new set of tires, right now is the time to order from Discount Tire Direct. They are offering a rebate in the form of a $100 Visa gift card when you order 4 tires (select brands). The deal ends September 3rd though.

http://www.discounttiredirect.com/direct/findPromotions.do?v=006876%7C1986&pgid=665