2011 GMC Savana 3500 Passenger Owner's Manual - Page 324

10-58 Vehicle Care Notice: Do not let anyone tell you that underinflation or overinflation is all right. It is not. If the tires do not have enough air (underinflation), you can get the following: . Vehicle Capacity Weight: The number of designated seating positions multiplied by 68 kg (150 lbs) plus the rated cargo load. See Vehicle Load Limits on page 9‑12. 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. 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. For additional information regarding how much weight the vehicle can carry, and an example of the Tire and Loading Information label, see Vehicle Load Limits on page 9‑12. How you load the vehicle affects vehicle handling and ride comfort. Never load the vehicle with more weight than it was designed to carry. If the tires have too much air (overinflation), you can get the following: ... Unusual wear. Poor handling. Rough ride. Needless damage from road hazards. Tire Pressure Tires need the correct amount of air pressure to operate effectively.