For 2012, the Tundra again is offered in two grades (Tundra and Limited), three cab styles (regular, double cab and crew max), three wheelbase lengths (126.8, 145.7 and 164.6 inches) and three bed lengths (78.7, 97.6 and 66.7 inches). For 2012, Toyota Tundra Limited grade and ones with TRD Rock Warrior package are equipped with standard back-up camera. All Toyota Tundra grades run on 18-inch styled steel wheels with P255/70 R18 tires. Tundra Limited grade models get standard 18-inch five-spoke aluminum alloy wheels with wider P275/65 R18 tires and optional 20-inch five-spoke alloy wheels with P275/55 R20 tires. The Tundra offers three types of engine, a 4.0-liter V6 engine which produces 270 horsepower and 278 lb.-ft of torque, a 4.6-liter V8 engine which produces 310 horsepower and 327 lb. –ft of torque, and a 5.7-liter V8 with 381 horsepower and 401 lb.-ft of torque.