Sizes of Tires and Rims for the Pontiac Grand Prix
Grand Prix GXP W-body (2005-2008)
| Tire size | Tire pressure | Rim size | Wheel fastener | Center bore |
|---|---|---|---|---|
| Front: 255/45 R18 Rear: 225/50R18 |
Front: 2.6 bar Rear: 2.4 bar |
Front: 8Jx18 ET40 Rear: 7Jx18 ET55 |
Nuts: 5 x 115 (PCD) | 70.3 mm |
| Front: 265/40 Z R19 Rear: 235/45ZR19 |
Front: 2.7 bar Rear: 2.5 bar |
Front: 8.5Jx19 ET40 Rear: 7.5Jx19 ET55 |
Nuts: 5 x 115 (PCD) | 70.3 mm |
Grand Prix W-body III (2004-2008)
| Tire size | Tire pressure | Rim size | Wheel fastener | Center bore |
|---|---|---|---|---|
| 225/60 R16 | 2.3 bar | 6.5Jx16 ET52 | Nuts: 5 x 115 (PCD) | 70.3 mm |
| 225/55 R17 | 2.4 bar | 7Jx17 ET52 | Nuts: 5 x 115 (PCD) | 70.3 mm |
Grand Prix W-body II (1997-2003)
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| Tire size | Tire pressure | Rim size | Wheel fastener | Center bore | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 205/70 R15 | 2.1 bar | 6Jx15 ET52 | Nuts: 5 x 115 (PCD) | 70.3 mm | ||||||||
| 225/60 R16 | 2.3 bar | 6.5Jx16 ET52 | Nuts: 5 x 115 (PCD) | 70.3 mm | ||||||||
Grand Prix W-body I (1988-1996)
| Tire size | Tire pressure | Rim size | Wheel fastener | Center bore |
|---|---|---|---|---|
| 195/75 SR14 | 5.5Jx14 ET38 | Nuts: 5 x 115 (PCD) | 70.3 mm | |
| 205/70 SR15 | 6Jx15 ET42 | Nuts: 5 x 115 (PCD) | 70.3 mm | |
| 215/60 HR16 | 6.5Jx16 ET42 | Nuts: 5 x 115 (PCD) | 70.3 mm |
Grand Prix G-body (1982-1987)
| Tire size | Tire pressure | Rim size | Wheel fastener | Center bore |
|---|---|---|---|---|
| 195/75 SR14 | 6Jx14 ET8 | Nuts: 5 x 120.65 (PCD) | 70.3 mm | |
| 205/75 SR14 | 6Jx14 ET8 | Nuts: 5 x 120.65 (PCD) | 70.3 mm |
Grand Prix A-body (1978-1981)
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| Tire size | Tire pressure | Rim size | Wheel fastener | Center bore | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 195/75 SR14 | 6Jx14 ET8 | Nuts: 5 x 120.65 (PCD) | 70.3 mm | |||||||||
| 205/70 HR15 | 6Jx15 ET8 | Nuts: 5 x 120.65 (PCD) | 70.3 mm | |||||||||
