Chevrolet Silverado 2500 III (K2XX)
2016–2018 2 trimsSilverado 2500 4.3 +1 variant 285 hp · V6 245/75R17 121R 4 fitments
Same tires and wheels on: 5.3
- Generation
- K2XX Facelift · 2016–2018
- Power
- 285 hp
- Engine
- V6, Petrol
- Center bore
- 124.1 mm
- Bolt pattern
- 8x180
- Thread
- M14 x 1.5
| Tire size | Rim size and bolt pattern | Pressure, psi |
|---|---|---|
| 245/75R17 121R | Rim 17x7.5 ET44 | 60 psi |
| 265/70R17 121Q | Rim 17x7.5 ET44 | 60 psi |
| 265/70R18 124R | Rim 18x8 ET44 | 65 psi |
| 265/60R20 121S | Rim 20x8.5 ET44 | 60 psi |
How to read 121R: 121 is the load index (up to 3,197 lb / 1,450 kg per tire) and R the speed rating (up to 106 mph / 170 km/h). ET44 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.