2008 GMC Sierra Tire Pressure & Sizes
On this page you can first find a list of the trims for the 2008 GMC Sierra along with the tire sizes you can expect to find on them.
Once you have your correct tire size you can then scroll down to the pressures chart and cross-reference it to find the recommended front and rear pressure rating.
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Trims & Tire Sizes
Tire Pressures
Best Winter Tires
Best Summer Tires
Best Highway Tires
Best All Season Tires
Best All Terrain Tires
2008 GMC Sierra Trims
GMC Sierra models built during 2008 were offered in the following trims with these tire sizes fitted as standard.
| Trim Name | Tire Size/s |
|---|---|
| 2500 HD 2wd Crew Cab |
|
| 2500 HD 2wd Extended Cab |
|
| 2500 HD 2wd Regular Cab |
|
| 2500 HD 4wd Crew Cab |
|
| 2500 HD 4wd Extended Cab |
|
| 2500 HD 4wd Regular Cab |
|
| 3500 HD 2wd Crew Cab |
|
| 3500 HD 2wd Crew Cab Dually |
|
| 3500 HD 2wd Extended Cab |
|
| 3500 HD 2wd Extended Cab Dually |
|
| 3500 HD 2wd Regular Cab |
|
| 3500 HD 4wd Crew Cab |
|
| 3500 HD 4wd Crew Cab Dually |
|
| 3500 HD 4wd Extended Cab |
|
| 3500 HD 4wd Extended Cab Dually |
|
| 3500 HD 4wd Regular Cab |
|
| 3500 HD 4wd Regular Cab Dually |
|
| C1500 Crew Cab |
|
| C1500 Extended Cab |
|
| C1500 Regular Cab |
|
| Denali 2wd |
|
| Denali 4wd |
|
| K1500 Crew Cab |
|
| K1500 Extended Cab |
|
| K1500 Regular Cab |
|
2008 Sierra Tire Pressures By Size
GMC Sierra models built in 2008 with the following tire sizes are recommended to be kept at the following pressures.
| Tire Size | Front | Rear |
|---|---|---|
|
LT245/70R17/C 108Q "LT" tires are designed for "light-trucks" carrying loads such as pickups |
45 PSI | 45 PSI |
|
P245/70R17 108S "P" tires are designed for carrying "passengers" only |
35 PSI | 35 PSI |
|
P265/65R18 112S "P" tires are designed for carrying "passengers" only |
30 - 35 PSI | 30 - 35 PSI |
|
P265/70R17 113S "P" tires are designed for carrying "passengers" only |
35 PSI | 35 PSI |
|
P275/55R20 111S "P" tires are designed for carrying "passengers" only |
30 PSI | 30 PSI |
|
LT245/75R16/E 120S "LT" tires are designed for "light-trucks" carrying loads such as pickups |
50 - 65 PSI | 80 PSI |
|
LT265/70R17/E 121Q "LT" tires are designed for "light-trucks" carrying loads such as pickups |
60 PSI | 75 PSI |
|
LT225/75R17/E 113Q "LT" tires are designed for "light-trucks" carrying loads such as pickups |
65 PSI | 80 PSI |
|
LT265/75R16/E 123Q "LT" tires are designed for "light-trucks" carrying loads such as pickups |
60 PSI | 75 PSI |
What Do These Numbers Mean?
When comparing tires you will find that they display various numbers and codes along the edges.
These numbers help you choose the right tire (size and speed rating) for your car and the following image shows you what each of them mean:
