This is the best tire buying trick out there...
If you have a Discount Tire Store in town go there and price the tire that you want.
Now go to
Discount Tire Direct and price the same tire.
Now take which ever price is lower to the other store, if your local tire store is cheaper, just call Discount Tire Direct... Otherwise take the print out from Discount Tire Direct to your local store and they will be the price. Then fax that quote back to DIscount Tire Direct...
THEY WILL get into a pricing war with one another and the price usually comes down about 30% from the best original quote.
This works every time, I am in Phoenix and have been doing this for 10 years for all my trucks. All my friends do it now too...
BTW, Discount Tire Direct will send the stores to the local store free of charge and the local store will install them free of charge too, if you ask...