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Vehicle Specification Lookup Tool🔍
Pontiac G8 Tire Sizes (2008-2009)
The Pontiac G8 tire sizes are P245/45R18 or P245/40R19 as specified in our data below, organized by trim, option package, and model yearas specified in our data below, organized by trim, option package, and model year.
Some examples of Pontiac G8 tire sizes include the 2008 Pontiac G8 GT Trim with P245/45R18 tires and the 2009 G8 GXP Trim with P245/40R19 tires.
Tire Codes Explained (Ex. P255/55VR17)
P - Denotes the tires intended use. (P = Passenger, LT = Light Truck, T = Temporary, ST = Special Trailer)
255 - Width of the tire tread in millimeters.
55 - Tire Profile. The ratio between the profile (sidewall) height and the width of the tire's tread. It is measured in percent. A lower number is a low profile tire and a higher number has a higher sidewall.
V - Speed Rating. ( ie. U = 125 mph, H = 130 mph, V = 149 mph ... etc)
R - Tire Construction. (R = Radial, B = Bias Belt, D = Diagonal)
17 - Rim (wheel) diameter in inches.
Check out the Tire Sizes specifications for other makes and models.
2009 Pontiac G8 Tire Sizes
The 2009 Pontiac G8 tire sizes are P245/45R18 and P245/40R19.
| Trim | Engine | Transmission | Drivetrain | Front Tire Size | Rear Tire Size |
|---|---|---|
| Base Sedan | 3.6L | V6 | VARIABLE-VALVE TIMING DOHC SFI ALUMINUM | 5 Spd Auto With Driver Shift Control And Sport Mode | RWD | P245/45R18 | P245/45R18 |
| GT Sedan | 6.0L | V8 | SFI ALUMINUM WITH ACTIVE FUEL MANAGEMENT | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD | P245/45R18 | P245/45R18 |
| GXP Sedan | 6.2L | V8 | SFI ALUMINUM (415 HP [309.4 KW] @ 5900 RPM 415LBFT OF TORQUE [560.2 N-M] @ 4600 RPM) | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD | P245/40R19 | P245/40R19 |
2008 Pontiac G8 Tire Sizes
The 2008 Pontiac G8 tire size is P245/45R18.
| Trim | Engine | Transmission | Drivetrain | Front Tire Size | Rear Tire Size |
|---|---|---|
| Base Sedan | 3.6L | V6 | VARIABLE VALVE TIMING DOHC SFI ALUMINUM | 5 Spd Auto With Driver Shift Control And Sport Mode | RWD | P245/45R18 | P245/45R18 |
| GT Sedan | 6.0L | V8 | SFI ALUMINUM WITH ACTIVE FUEL MANAGEMENT | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD | P245/45R18 | P245/45R18 |
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