Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
If it fails:
lemon-manuals.org.ua
Or, hide this message:
temporarily or
permanently
Brake Rotor/Disc
GM brake systems are identified by Regular Production Option (RPO) codes. For further information on RPO codes see Application and ID.
| RPO JB3, JB5, JB6, JB7, JD3, JD5, JD6, JD7 | RPO JB8, JF9 |
| Nominal Thickness | 1.28 Inch (in) | 1.53 Inch (in) |
| Minimum Refinish Thickness | 1.23 Inch (in) | 1.48 Inch (in) |
| Discard Thickness | 1.215 Inch (in) | 1.465 Inch (in) |