Technical Service Bulletin No. 73-20 — 1989 PORSCHE 928
TIRES
Bulletin Details
| TSB ID | No. 73-20 |
| Manufacturer | |
| Vehicle | 1989 PORSCHE 928 |
| Component | TIRES |
| Communication Date |
Bulletin Summary
List of approved wheels, tires, and spacers for the 928 model, from Model Years 1978 to 1995.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.