Update: This deal is now also available through Discount Tire (proper), in addition to Discount Tire Direct, through Saturday only.
If your tires are about due for a replacement, Discount Tire Direct is offering up to $100 in Visa gift card rebates (in addition to any manufacturer rebates) when you order four new tires, plus an additional $100 if you order wheels as well, plus an extra $60 on each if you use a Discount Tire credit card. Just enter your make and model, click the options to see tires on promotion, and you’ll see the rebate amount (either $25, $75, or $100) on the right hand side.