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2008 Pontiac G8 Wheel and Tire Measurements and Specifications Editor's Note: This is a new tool (1/21). Not all models or model years are fully represented in the results - some full generations are not yet listed. We are working to grow this resource as quickly as possible.
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2008 Pontiac G8
Pontiac G8 Generations / Model Years 2008 Pontiac G8 Trim Packages and OEM Wheel/Tire Options 2008 Pontiac G8 3.6i OEM Wheel Size Tire Size
8Jx18 ET48 — 245/45R18 8Jx18 ET48 Wheel Measurements and Specifications Wheel Bolt Pattern: 5x120
Wheel Width: 8" (203mm)
Wheel Diameter: 18" (457mm)
Hub Centerbore: 66.6 mm
Wheel Offset: 48
Wheel Backspace: 6.39" (162mm) ±
Wheel Fasteners: M14 x 1.5 Lug nuts Torque Sequence: 1, 3, 5, 2, 4 Torque Specification: 85-90 Ft/Lbs *
One-peice construction wheels. 245/45R18 Tire Measurements and Specifications Tire Width: 245mm (9.65")
Tire Section Height: 110.25mm (4.3425")
Overall Height: 677.70mm (26.69")
Aspect Ratio: 45
8Jx19 ET48 — 245/40ZR19 8Jx19 ET48 Wheel Measurements and Specifications Wheel Bolt Pattern: 5x120
Wheel Width: 8" (203mm)
Wheel Diameter: 19" (483mm)
Hub Centerbore: 66.6 mm
Wheel Offset: 48
Wheel Backspace: 6.39" (162mm) ±
Wheel Fasteners: M14 x 1.5 Lug nuts Torque Sequence: 1, 3, 5, 2, 4 Torque Specification: 85-90 Ft/Lbs *
One-peice construction wheels. 245/40ZR19 Tire Measurements and Specifications Tire Width: 245mm (9.65")
Tire Section Height: 98mm (3.86")
Overall Height: 678.60mm (26.72")
Aspect Ratio: 40
Model/Trim Notes: The pontiac g8 3.6i was available in the USDM from Model Year 2008 to 2009 and is powered by a 256 hp V6, Petrol engine.
2008 Pontiac G8 6.0i GT OEM Wheel Size Tire Size
8Jx18 ET48 — 245/45R18 8Jx18 ET48 Wheel Measurements and Specifications Wheel Bolt Pattern: 5x120
Wheel Width: 8" (203mm)
Wheel Diameter: 18" (457mm)
Hub Centerbore: 66.6 mm
Wheel Offset: 48
Wheel Backspace: 6.39" (162mm) ±
Wheel Fasteners: M14 x 1.5 Lug nuts Torque Sequence: 1, 3, 5, 2, 4 Torque Specification: 85-90 Ft/Lbs *
One-peice construction wheels. 245/45R18 Tire Measurements and Specifications Tire Width: 245mm (9.65")
Tire Section Height: 110.25mm (4.3425")
Overall Height: 677.70mm (26.69")
Aspect Ratio: 45
8Jx19 ET48 — 245/40ZR19 8Jx19 ET48 Wheel Measurements and Specifications Wheel Bolt Pattern: 5x120
Wheel Width: 8" (203mm)
Wheel Diameter: 19" (483mm)
Hub Centerbore: 66.6 mm
Wheel Offset: 48
Wheel Backspace: 6.39" (162mm) ±
Wheel Fasteners: M14 x 1.5 Lug nuts Torque Sequence: 1, 3, 5, 2, 4 Torque Specification: 85-90 Ft/Lbs *
One-peice construction wheels. 245/40ZR19 Tire Measurements and Specifications Tire Width: 245mm (9.65")
Tire Section Height: 98mm (3.86")
Overall Height: 678.60mm (26.72")
Aspect Ratio: 40
Model/Trim Notes: The pontiac g8 6.0i GT was available in the USDM from Model Year 2008 to 2009 and is powered by a 361 hp V6, Petrol engine.
