Mercedes-Benz R Class wheel bolt & nut sizes
The Mercedes-Benz R Class (2006–2013) uses M14x1.5 wheel fixings with a R14 radius seat and a 17mm hex. It has 5 per wheel, so a full set is 20. Check the table below for the exact fixing for your year and wheel type.
Last updated 2 October 2026
Sizes by year and wheel type
| Image | Model code | Wheel type | Thread | Length | Seat | Hex size | Finish | Strength |
|---|---|---|---|---|---|---|---|---|
| 2006–2013 5 per wheel | ||||||||
| 251 | Steel Wheels | M14x1.5 | 45mm | R14 radius | 17mm hex | Delta KL100 | Class 10.9 |
| 251 | Alloy Wheels | M14x1.5 | 26mm | R14 radius | 17mm hex | Delta KL100 | Class 10.9 |
| 251 | Alloy Wheels | M14x1.5 | 27mm | R14 radius | 17mm hex | Corrolube + SS | Class 10.9 |
| 251 | Alloy Wheels | M14x1.5 | 45mm | R14 radius | 17mm hex | Corrolube + SS | Class 10.9 |
A dash in the length column means no length is listed for that fixing. Not sure which wheels you have? Steel wheels usually have a plastic trim cover over them.
Locking wheel keys for the Mercedes-Benz R Class
Lost or damaged your locking wheel key? Find a replacement for your Mercedes-Benz.
Common questions
What size are Mercedes-Benz R Class wheel bolts?
Mercedes-Benz R Class wheel fixings are M14x1.5 with a R14 radius seat and a 17mm hex.
Do steel and alloy wheels use the same bolts on a Mercedes-Benz R Class?
The thread, seat and hex size are the same. The finish differs: Delta KL100 for steel wheels, Delta KL100 / Corrolube + SS for alloys.
How many wheel bolts does a Mercedes-Benz R Class need?
5 per wheel, so 20 for a full set of four wheels.