2011 Chevrolet Impala Owner's Manual - Page 305

Vehicle Care Vehicle Maximum Load on the Tire: Load on an individual tire due to curb weight, accessory weight, occupant weight, and cargo weight. Vehicle Placard: A label permanently attached to a vehicle showing the vehicle capacity weight and the original equipment tire size and recommended inflation pressure. See "Tire and Loading Information Label" under Vehicle Load Limits on page 9‑12. 10-49 Tire Pressure Tires need the correct amount of air pressure to operate effectively. Notice: Neither tire underinflation nor overinflation is good. Underinflated tires, or tires that do not have enough air, can result in: . Overinflated tires, or tires that have too much air, can result in: ... Unusual wear. Poor handling. Rough ride. Needless damage from road hazards. Tire overloading and over-heating which could lead to a blowout. Premature or irregular wear. Poor handling. Reduced fuel economy. . . . A vehicle-specific Tire and Loading Information label is attached to the vehicle. This label shows the vehicle's original equipment tires and the correct inflation pressures for the tires when they are cold. The recommended cold tire inflation pressure, shown on the label, is the minimum amount of air pressure needed to support the vehicle's maximum load carrying capacity.