Pontiac G8 Tire Pressure
Pontiac G8 models from 2008 to 2009 have recommended tire pressure of 36 psi to 39 psi based on model year, trim and original equipment tire size.
Pontiac G8 is a passenger car offered in 3 trims and equipped with 3 original equipment tire size sets. You can find recommended tire pressure for Pontiac G8 by model year, model trim or its original equipment tire size. Do not forget to check out frequently asked questions.
Select Pontiac G8 year to see its original equipment tire sizes and corresponding tire inflation pressures.
2009 Pontiac G8 Tire Pressure
Recommended tire pressure for 2009 Pontiac G8 is 36 psi for front tires and 39 psi for rear tires.
| Tire Size | Front Tire Pressure | Rear Tire Pressure |
|---|---|---|
| 245/40R19 94W | 36 psi | 39 psi |
| 245/45R18 96V | 36 psi | 39 psi |
| P245/45R18 96V | 36 psi | 39 psi |
2008 Pontiac G8 Tire Pressure
Recommended tire pressure for 2008 Pontiac G8 is 36 psi for front tires and 39 psi for rear tires.
| Tire Size | Front Tire Pressure | Rear Tire Pressure |
|---|---|---|
| 245/40R19 94W | 36 psi | 39 psi |
| 245/45R18 96V | 36 psi | 39 psi |
| P245/45R18 96V | 36 psi | 39 psi |
Select Pontiac G8 trim to see its original equipment tire sizes and corresponding tire inflation pressures.
Tire Pressure for Pontiac G8
Recommended tire inflation for Pontiac G8 is 36 psi for front tires and 39 psi for rear tires.
| Tire Size | Front Tire Pressure | Rear Tire Pressure |
|---|---|---|
| 245/45R18 96V | 36 psi | 39 psi |
| P245/45R18 96V | 36 psi | 39 psi |
Tire Pressure for Pontiac G8 GT
Recommended tire inflation for Pontiac G8 GT is 36 psi for front tires and 39 psi for rear tires.
| Tire Size | Front Tire Pressure | Rear Tire Pressure |
|---|---|---|
| 245/40R19 94W | 36 psi | 39 psi |
| 245/45R18 96V | 36 psi | 39 psi |
| P245/45R18 96V | 36 psi | 39 psi |
Tire Pressure for Pontiac G8 GXP
Recommended tire inflation for Pontiac G8 GXP is 36 psi for front tires and 39 psi for rear tires.
| Tire Size | Front Tire Pressure | Rear Tire Pressure |
|---|---|---|
| 245/40R19 94W | 36 psi | 39 psi |
Recommended tire inflation for Pontiac G8 original equipment tire sizes with matching trims and model years.
| Tire Size | Front Tire Pressure | Rear Tire Pressure |
|---|---|---|
| 245/40R19 94W | 36 psi | 39 psi |
| Years: 2008 - 2009 Trims: GT GXP |
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| 245/45R18 96V | 36 psi | 39 psi |
| Years: 2008 - 2009 Trims: Base Model GT |
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| P245/45R18 96V | 36 psi | 39 psi |
| Years: 2008 - 2009 Trims: Base Model GT |
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All listed data and/or calculations are for informational purposes only. TirePressure.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for recommended tire pressure settings. Never overinflate or overload a tire beyond its maximum capabilities listed on sidewall.
What should Pontiac G8 tire pressure be?
Recommended tire pressure for Pontiac G8 tires ranges from 36 psi to 39 psi, as set by vehicle manufacturer according to model's original equipment tire size and gross vehicle weight rating (GVWR) to optimize vehicle safety, performance and fuel efficiency.
Where to find recommended tire pressure for Pontiac G8?
Pontiac G8 recommended tire pressure can be found in owner's manual, on a tire placard on the side of driver's door or door jam, on the trunk lid, in the console or on the fuel door. Tire inflation will be listed in psi (pounds per square inch), bar or kPa (kilopascals).
How to check tire pressure on Pontiac G8?
To check Pontiac G8 tire pressure you will first need to determine its recommended tire pressure for the front and rear tires. Take off tire valve caps and use a tire pressure gauge to check tire inflation in every tire. Adjust Pontiac G8 tire pressure to its recommended levels. If overinflated, let some air out by pressing down the center plunger in the valve stem. If underinflated, add air with tire inflator. Recheck tire pressure to make sure all tires are properly inflated. Replace the valve stem caps. Make sure to check tire pressure when tires are "cold" and have not been driven for at least 3 hours. Remember that the front and rear tire pressures may differ.
What is proper tire pressure for Pontiac G8 replacement tires?
If you replace Pontiac G8 original equipment tires with non-stock tires that have different size or load capacity, new tires may require substantially different inflation pressures. Use our tire pressure calculator to find proper tire inflation when switching to a different tire size.
What is recommended winter tire pressure for Pontiac G8?
Tire pressure fluctuates with ambient temperatures. When temperatures drop, Pontiac G8 tires may lose approximately 1 psi of air pressure for every 10 degree Fahrenheit decrease. During winter Pontiac G8 tires can be inflated 3 to 5 psi above the recommended tire pressure settings to compensate for lower temperatures. Do not overinflate above the maximum tire inflation pressure value indicated on tire sidewall. Make sure to check tire pressure regularly in the winter to keep tires properly inflated for a safe ride on snow and icy roads.
Is Pontiac G8 equipped with Tire Pressure Monitoring System (TPMS)?
If your Pontiac G8 is built after 2007, it is most likely equipped with a Tire Pressure Monitoring System. Check owner's manual to see if your model has TPMS.
Why is Pontiac G8 tire pressure light on?
If Pontiac G8 TPMS warning light comes on and stays on, it means at least one of the tires is underinflated. If TPMS warning light goes on and off, fluctuating ambient temperatures may be the reason. If Pontiac G8 TPMS warning light flashes for 90 seconds when you start the vehicle and then remains illuminated, the TPMS is not functioning properly and you should have it serviced.
How to reset tire pressure light on Pontiac G8?
To reset tire pressure light on Pontiac G8, follow the instructions in owner's manual. If tire pressure monitoring system will not reset, there may be a problem with tire pressure sensors.