Mazda MX5 wheel bolt & nut sizes
The Mazda MX5 (1991–2015) uses M12x1.5 wheel fixings with a 60° taper seat and a 21mm hex. 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
21mm hex
Strength
Class 8
Sizes by year and wheel type
| Image | Model code | Wheel type | Thread | Length | Seat | Hex size | Finish | Strength |
|---|---|---|---|---|---|---|---|---|
| 1991–2015 4 or 5 per wheel: Mk1/Mk2 (to 2005) 4-stud, Mk3 5-stud | ||||||||
| NA, NB, NC1 | Alloy Wheels | M12x1.5 | – | 60° taper | 21mm hex | Zinc + SS | Class 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 Mazda MX5
Lost or damaged your locking wheel key? Find a replacement for your Mazda.
Common questions
What size are Mazda MX5 wheel bolts?
Mazda MX5 wheel fixings are M12x1.5 with a 60° taper seat and a 21mm hex.