Leon Mk1
| Layout of a wheel rim |
| 1 - | Wheel rim contour: |
| q | Contact surface for lateral tyre bead |
| 2 - | Hump (H2) on both sides of rim |
| q | This prevents the tyre from coming off the shoulder of the rim during extreme cornering. |
| q | Extended hump (EH2): required for use with tyres with emergency running characteristics → Chapter |
| 3 - | Lower throat |
| q | Facilitates tyre mounting |
| A - | Flange-to-flange width |
| q | Distance between contact surfaces on both rim flanges |
| q | Dimensions specified in inches |
| B - | Wheel rim diameter code |
| q | Distance between contact surfaces of tyre on opposing shoulders |
| q | Dimensions specified in inches |
| C - | Rim depth |
| q | Distance between vertical centre of wheel and inner wheel contact surface |
| q | Dimensions specified in mm |
| D - | Pitch circle diameter |
| q | Pitch circle diameter of holes for wheel lug bolts |
| q | Dimensions specified in mm |
| E - | Middle hole |
| q | Used for centring |
| q | Dimensions specified in mm |
