Wheels (rims) have a designation of dimensions, for example: 7Jx16x50.
| 7 | Rim width in inches |
| J | Rim flange profile |
| 16 | Rim diameter in inches |
| 50 | Off-set in mm (distance from wheel centre to wheel contact surface against the hub) |
Wheel and wheel rim dimensions
Wheel and rim dimensions are designated in accordance with the examples in the table below.