GM's High Performance Vehicle Operations tuned suspension and upgraded brakes of SS. It features stiffer springs, an inch lower ride height, and thicker anti-roll bars, as well as standard StabiliTrak stability control. Larger, 12.8-inch diameter front brake discs are fitted, allied to new iron twin-piston calipers, while monster twenty-inch aluminum wheels have 255/50 V-rated tires. The TrailBlazer SS has unique exterior styling and specific interior appointments, including prominent 20-inch flangeless wheels. Power is delivered by Corvette-derived LS2 6.0L V-8, enabling a 0-60 mph time of 5.7 seconds. A performance suspension with lowered ride height also is part of package and was tuned by GM’s Performance Division at several racetracks, including Germany’s legendary Nurburgring – a challenging road course that features more than 12.5 miles of turns and drastic elevation changes. The TrailBlazer SS is available in two-wheel drive and all-wheel drive configurations. The four-wheel disc braking system of TrailBlazer SS is enhanced with larger, 12.8-inch front disc brake rotors and new, iron twin-piston calipers. The heavy-duty iron calipers are stiff and retain their shape under high pressure/high heat braking conditions, providing a linear feel and reduced pedal travel in high-energy stops. The brake pads use same high-performance linings as Corvette for strong fade resistance. ABS is standard. There also is an accessory front brake-cooling package available for optimized track performance. Chevrolet's engineers did extensive chassis tuning to Trailblazer SS where they lowered suspension 1-inch and add 25% stiffer springs. The ride height has been lowered about an inch using 25 percent stiffer for a firmer ride and reducing body roll, and to give TrailBlazer SS a lower, more aggressive demeanor.