Don't forget about the free flat repair as well. Since there are a lot more America's/Discount Tire Centers around the county this is of more value than free flat repairs by 4WP. If you want added protection by the Certificate's. This gives you free tire replacement if you bust a tire and it can't be repaired. I think I got this for an extra $20 bucks a tire. There is a limit, however. If you are one of those guys that busts two tires every time you go out they will eventually cut you off. This happened to a friend of mine. He would tear out the sidewall of two tires almost every trip. Discount Tires finally said enough and won't replace any more tires free of charge. Personally I don't think this policy is unreasonable. If you're not paying attention to tire placement and constantly ripping out sidewalls then your a lousy driver in my book. I'm very aware of tire placement and will gladly adjust my line if I feel like I might damage a tire. As a result, aside from popping a bead, I have never had a flat (knock on wood).
'91 YJ 4.O, Auto, Rr. D60 w/ 35 Spline Alloy USA Axles & Detriot Locker, Fr. D30 True-Trac, 4.56's, 4.5" Deaver Springs, Bilstein 5100's, 1" BL, Rubi Flares, 35x12.50 MT/R's on MT classic II's, Detroit Locker, Vanco Big Brakes, Booster & Master, Warn 9000XDI, York OBA, AA SYE & TW's DS's, Teraflex Belly Up, Rocker Guards...