UTQGS (Uniform Tire Quality Grading Standards):A tire information system that provides consumerswith ratings for a tire’s traction, temperature, andtreadwear. Ratings are determined by tire manufacturersusing government testing procedures. The ratings aremolded into the sidewall of the tire. See UniformTire Quality Grading on page 5-73.Vehicle Capacity Weight: The number of designatedseating positions multiplied by 150 lbs (68 kg) plusthe rated cargo load. See Loading Your Vehicleon page 4-44.Vehicle Maximum Load on the Tire: Load on anindividual tire due to curb weight, accessory weight,occupant weight, and cargo weight.Vehicle Placard: A label permanently attached to avehicle showing the vehicle’s capacity weight andthe original equipment tire size and recommendedinflation pressure. See “Tire and Loading InformationLabel” under Loading Your Vehicle on page 4-44.Inflation - Tire PressureTires need the correct amount of air pressure to operateeffectively.Notice: Do not let anyone tell you thatunder-inflation or over-inflation is all right. It is not.If your tires do not have enough air (under-inflation),you can get the following:• Too much flexing• Too much heat• Tire overloading• Premature or irregular wear• Poor handling• Reduced fuel economyIf your tires have too much air (over-inflation), youcan get the following:• Unusual wear• Poor handling• Rough ride• Needless damage from road hazards5-66
