Opel Karl wheel bolt & nut sizes
The Opel Karl (2015 on) uses M12x1.5 wheel fixings with a 60° taper seat and a 19mm hex. It has 4 per wheel, so a full set is 16. Check the table below for the exact fixing for your year and wheel type.
Last updated 2 October 2026
Thread
M12x1.5
Seat
60° taper
Hex size
19mm hex
Strength
Class 10
Sizes by year and wheel type
| Image | Model code | Wheel type | Thread | Length | Seat | Hex size | Finish | Strength |
|---|---|---|---|---|---|---|---|---|
| 2015 on 4 per wheel | ||||||||
| D-A | Steel & Alloy Wheels | M12x1.5 | – | 60° taper | 19mm hex | Zinc | Class 10 |
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 Opel Karl
Lost or damaged your locking wheel key? Find a replacement for your Opel.
Common questions
What size are Opel Karl wheel bolts?
Opel Karl wheel fixings are M12x1.5 with a 60° taper seat and a 19mm hex.
How many wheel bolts does a Opel Karl need?
4 per wheel, so 16 for a full set of four wheels.