Citroen C4 Aircross wheel bolt & nut sizes
The Citroen C4 Aircross (2012–2014) uses M12x1.5 wheel fixings with a 60° taper or flat seat and a 21mm 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 |
|---|---|---|---|---|---|---|---|---|
| 2012–2014 5 per wheel | ||||||||
| B | Steel & Alloy Wheels | M12x1.5 | 42mm | Head Ø 18 | 14.3mm spline | Zinc | Class 10.9 |
| B | Steel Wheels | M12x1.5 | – | 60° taper | 21mm hex | Yellow Zinc | Class 8 |
| B | Alloy Wheels | M12x1.5 | – | Flat | 21mm hex | Chrome | 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 Citroen C4 Aircross
Lost or damaged your locking wheel key? Find a replacement for your Citroen.
Common questions
What size are Citroen C4 Aircross wheel bolts?
Citroen C4 Aircross wheel fixings are M12x1.5 with a 60° taper or flat seat and a 21mm hex.
Do steel and alloy wheels use the same bolts on a Citroen C4 Aircross?
No. Steel and alloy wheels use different fixings on the Citroen C4 Aircross. The table above shows which one fits each wheel type.
How many wheel bolts does a Citroen C4 Aircross need?
5 per wheel, so 20 for a full set of four wheels.