Sizes of Tires and Rims for the Geo
Spectrum JT150 (1985-1990)
| Tire size | Tire pressure | Rim size | Wheel fastener | Center bore |
|---|---|---|---|---|
| 175/70 R13 | 2 bar | 5Jx13 ET39 | Nuts: 4 x 100 (PCD) | 56.1 mm |
| 175/65 R14 | 2 bar | 5Jx14 ET41 | Nuts: 4 x 100 (PCD) | 56.1 mm |
| 175/55 R15 | 2.1 bar | 6Jx15 ET45 | Nuts: 4 x 100 (PCD) | 56.1 mm |
| 185/55 R15 | 2.1 bar | 6Jx15 ET43 | Nuts: 4 x 100 (PCD) | 56.1 mm |
