When you inflate the tires to the recommended inflationpressures, the factory-installed wheels and tires are designed inorder to handle loads to the tire's rated load capacity. Incorrecttire pressures, or under-inflated tires, can cause the followingconditions:
Vehicle handling concernsPoor fuel economyShortened tire lifeTire overloadingInspect the tire pressure when the following conditionsapply:
The vehicle has been sitting at least3-hours.The vehicle has not been driven for more than1.6-km (1-mi).The tires are cool.Inspect the tires monthly or before any extended trip. Adjustthe tire pressure to the specifications on the tire label. Installthe valve caps or the extensions on the valves. The caps or theextensions keep out dust and water.
The kilopascal (kPa) is the metric term for pressure. Thetire pressure may be printed in both kilopascal (kPa) and psi. Onepsi equals 6.9-kPa.
140 | 20 | 215 | 31 |
145 | 21 | 220 | 32 |
155 | 22 | 230 | 33 |
160 | 23 | 235 | 34 |
165 | 24 | 240 | 35 |
170 | 25 | 250 | 36 |
180 | 26 | 275 | 40 |
185 | 27 | 310 | 45 |
190 | 28 | 345 | 50 |
200 | 29 | 380 | 55 |
205 | 30 | 415 | 60 |
Conversion: 6.9-kPa = 1-psi |
Tires with a higher than recommended pressure can cause thefollowing conditions:
A hard rideTire bruisingRapid tread wear at the center of the tireTires with a lower than recommended pressure can cause thefollowing conditions:
A tire squeal on turnsHard steeringRapid wear and uneven wear on the edge of the treadTire rim bruises and tire rim ruptureTire cord breakageHigh tire temperaturesReduced vehicle handlingHigh fuel consumptionSoft ridingUnequal pressure on the same axle can cause the followingconditions:
Uneven brakingSteering leadReduced vehicle handlingRefer to the Tire Placard for specific tire and wheelapplications and tire pressures.
#13-00-89-006: Warranty Administration – Changes in Powertrain Warranty Coverage Effective with 2010 Model Year - (May 28, 2013)
Subject:Warranty Administration – Changes in Powertrain Warranty Coverage Effective with 2010Model YearModels: 2010-2014 GM Passenger Cars and Trucks Following a competitive assessment, effective with the 2010 Model Year and beyond,General Motors made changes to the 5 year/100,000 mile (160,00 ...