| JB6 | Brake Drum Discard Diameter | 11.24 |
| Brake Drum Maximum Diameter After Refinish | 11.21 |
| Brake Drum Inside Diameter (new) | 11.15 |
| Brake Drum Maximum Allowable Radial Runout | 0.006 |
| Brake Drum Maximum Allowable Scoring | 0.06 in |
| JD7 | Brake Drum Discard Diameter | 13.09 |
| Brake Drum Maximum Diameter After Refinish | 13.06 |
| Brake Drum Inside Diameter (new) | 13.00 |
| Brake Drum Maximum Allowable Radial Runout | 0.006 |
| Brake Drum Maximum Allowable Scoring | 0.06 in |
| JB8 | Brake Drum Discard Diameter | 13.09 |
| Brake Drum Maximum Diameter After Refinish | 13.06 |
| Brake Drum Inside Diameter (new) | 13.00 |
| Brake Drum Maximum Allowable Radial Runout | 0.006 |
| Brake Drum Maximum Allowable Scoring | 0.06 |