The 2011 Yamaha TMAX is built on a very stiff chassis carrying a beefy suspension and sporty H-speed-rated, radial tires on 15-inch alloy wheels. The frame of the bike is lightweight, die-cast aluminum. The 499-cc, liquid-cooled, four-stroke, parallel two-cylinder engine is mounted horizontally and serves as a stressed member of the frame. Inside that motor are forged pistons on carburized connecting rods and four valves per cylinder. Cylinder walls are plated with a ceramic composite for reduced friction and improved durability. The compression ratio is 11.0:1. Electronic fuel injection and digital transistor-controlled ignition contribute to efficient operation and low maintenance. The clutch is a wet, multi-plate, automatic, centrifugal unit. It connects the engine to a continuously-variable automatic transmission with a double-cog V-belt. The double-sided swing arm is separate from the power unit and this contributes to the very motorcycle-like feel of this scooter. The dual-disc front brakes feature four-piston monobloc calipers. The rear brake is a single disc. All three rotors are 10.5 inches in diameter. The result is one of the best-stopping big scooters around. This is reassuring on a machine that can top 100 miles per hour. A four-gallon fuel tank and the 47 mpg combine for a usable range of more than 150 miles between fill ups. The 2011 Yamaha TMAX can realistically be called a touring scooter that rides like a sports bike.