2012 Jeep Grand Cherokee Owner Manual SRT - Page 458

456 STARTING AND OPERATING Tire Pressures For High Speed Operation Radial-Ply Tires The manufacturer advocates driving at safe speeds WARNING! within posted speed limits. Where speed limits or conditions are such that the vehicle can be driven at high Combining radial ply tires with other types of tires speeds, maintaining correct tire inflation pressure is very on your vehicle will cause your vehicle to handle important. Increased tire pressure and reduced vehicle poorly. The instability could cause a collision. Alloading may be required for high-speed vehicle operaways use radial tires in sets of four. Never combine tion. Refer to original equipment or an authorized tire them with other types of tires. dealer for recommended safe operating speeds, loading and cold tire inflation pressures. Cuts and punctures in radial tires are repairable only in the tread area because of sidewall flexing. Consult your WARNING! authorized dealer for radial tire repairs. High speed driving with your vehicle at or above maximum load is dangerous. The added strain on your tires could cause them to fail. You could have a serious collision. Do not drive a vehicle loaded to the maximum capacity at continuous speeds above 75 mph (120 km/h).