2006 Pontiac G6 Owner's Manual - Page 337
2006 Pontiac G6 Manual
Page 337 highlights
Different Size Tires and Wheels {CAUTION: If you use bias-ply tires on your vehicle, the wheel rim flanges could develop cracks after many miles of driving. A tire and/or wheel could fail suddenly, causing a crash. Use only radial-ply tires with the wheels on your vehicle. If you add wheels or tires that are a different size than your original equipment wheels and tires, this may affect the way your vehicle performs, including its handling characteristics and resistance to rollover. {CAUTION: If you add different sized wheels, your vehicle may not provide an acceptable level of performance and safety if tires not recommended for those wheels are selected. You may increase the chance that you will crash and suffer serious injury. Only use GM specific wheel and tire systems developed for your vehicle, and have them properly installed by a GM certified technician. See Buying New Tires on page 5-68 and Accessories and Modifications on page 5-3 for additional information. 5-69