Just because you can go fast is meanlingless if you can't control or stop the beast.

Brake system

A four-wheel disc brake system includes standard anti-lock and traction control features and is partnered with a standard electronic stability control system. Both the base and GT models feature vented front and rear disc rotors, with twin-piston alloy calipers in front; the rear brakes feature alloy calipers with single-piston actuation. The brakes are approximately one-inch larger on the higher-performance GT model.

• Brakes
  • Type
    • four-wheel disc w/ ABS
    • ventilated front and rear rotors
    • twin-piston front calipers
    • single piston alloy rear calipers
  • Rotor diameter (in / mm)
    • G8 front: 11.73 / 298
    • G8 rear: 11.89 / 302
    • G8 GT front: 12.64 / 321
    • G8 GT rear: 12.76 / 324
• Wheels/Tires
  • G8
    • Wheel size and type
      • 18 x 8-inch painted aluminum
  • G8 GT
    • Wheel size and type
      • 18 x 8-inch painted aluminum (std)
      • 19 x 8-inch painted aluminum (opt)
    • Tires
      • P245/45R18 (std)
      • P245/40R19 (opt)

yep..dont leave home without-em/big tires for sticking to the pavement,annd big brakes to bring ya to a smooth stop..with out question,lots of science and numbers went into producing the right match to halt the ponies under my GT/G8...thanks GM..for making flying to stopping so much fun.