If you are looking for a new set of tires, then check out Discount Tire Direct. Currently, they are having a promotion for $100 off if you buy a set of 4 tires or 4 wheels, or $200 if you buy both sets together. More warranties info here.
Call this number (800) 589-6789 for more info.
If you are lucky to live in any of these 3 states, then you use this In-store coupon:
Of course, anyone can order this deal online.
Even sweeter if you can combine this with rebates: