Porsche 911 wheel bolt & nut sizes
The Porsche 911 (1963 on) uses M14x1.5 wheel fixings with a R14 radius seat and a 19mm 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
Thread
M14x1.5
Seat
R14 radius
Hex size
19mm hex
Strength
Class 10 / Class 10.9
Sizes by year and wheel type
| Image | Model code | Wheel type | Thread | Length | Seat | Hex size | Finish | Strength |
|---|---|---|---|---|---|---|---|---|
| 1963–82 5 per wheel | ||||||||
| Classic, 912, 914, 924 | Alloy Wheels | M14x1.5 | – | R14 radius | 19mm hex | Zinc | Class 10 |
| 1989 on 5 per wheel | ||||||||
| 964, 993, 996, 997, 991 | Alloy Wheels | M14x1.5 | 30mm | R14 radius | 19mm hex | KL100 | 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 Porsche 911
Lost or damaged your locking wheel key? Find a replacement for your Porsche.
Common questions
What size are Porsche 911 wheel bolts?
Porsche 911 wheel fixings are M14x1.5 with a R14 radius seat and a 19mm hex.
How many wheel bolts does a Porsche 911 need?
5 per wheel, so 20 for a full set of four wheels.