MINI Convertible wheel bolt & nut sizes
The MINI Convertible (2004 on) uses M12x1.5 or M14x1.25 wheel fixings with a 60° taper seat and a 17mm hex, depending on year and wheel type. Check the table below for the exact fixing for your year and wheel type.
Last updated 2 October 2026
Thread
M12x1.5 / M14x1.25
Seat
60° taper
Hex size
17mm hex
Strength
Class 8.8 (250) / Class 8.8
Sizes by year and wheel type
| Image | Model code | Wheel type | Thread | Length | Seat | Hex size | Finish | Strength |
|---|---|---|---|---|---|---|---|---|
| 2004–2006 4 per wheel | ||||||||
| R52 (1st Gen) | Steel & Alloy Wheels | M12x1.5 | 26mm | 60° taper | 17mm hex | Corrolube | Class 8.8 (250) |
| 2007–2015 4 per wheel | ||||||||
| R57 (2nd Gen) | Steel & Alloy Wheels | M14x1.25 | 27mm | 60° taper | 17mm hex | Delta KL100 | Class 8.8 |
| 2016 on 5 per wheel | ||||||||
|
| F57 (3rd Gen) | Steel & Alloy Wheels | M14x1.25 | 27mm | 60° taper | 17mm hex | Delta KL100 | Class 8.8 |
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 MINI Convertible
Lost or damaged your locking wheel key? Find a replacement for your MINI.
Common questions
What size are MINI Convertible wheel bolts?
MINI Convertible wheel fixings are M12x1.5 or M14x1.25 with a 60° taper seat and a 17mm hex, depending on year and wheel type.