With its Tundra advertising, Toyota heavily promotes the size and quality of the mechanicals, and for good reason. Take the brakes: 13.9 inches in diameter up front and 13.6 inches in back, both sets are discs (first time for a Toyota truck) and hooked to a host of safety acronyms: ABS with Electronic Braking Distribution (EBD), Brake Assist (BA), TRAC (Traction Control), and Vehicle Stability Control (VSC). Standard base wheels are 18 inches and are fitted with P255/70R18 tires. Also available are 18-inch alloys with P275/65R18 tires, and 20-inch alloys with P275/55R20 tires (SR5 and Limited only). The suspension is an independent double wishbone front and a live axle rear, while the steering is handled by a hydraulic rack-and-pinion setup.