- engraved markings for steel rims;
- cast marking for light alloy wheels.
The marking indicates the main parameters of the rim.
Marking can be complete (e.g. 6 J 15 5 CH 36) or abbreviated (e.g. 6 J 15).
1 | Wheel rim width (in inches) | 6 |
2 | Wheel rim profile | J |
3 | Nominal diameter (in inches) | 15 |
4 | Number of bolt holes | 5 |
5 | Anchor bar profile | CH |
6 | Wheel protrusion (in mm) | 36 |
There are three types of wheel rim (2):
- with two flat edges
- with two convex edges,
- with one flat and one convex edge.
Mounting hole diameter 100 mm (4 holes).
The maximum allowable runout of the rim is measured along the rim (7). It is:
- for steel rims: 0.8 mm,
- for alloy wheels: 0.3 mm.
The value of the maximum deviation from the circle (ovality) tires are measured by the seating surface of the tire on the rim. It is:
- for steel rims: 0.7 mm,
- for alloy wheels: 0.3 mm.