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Service bulletin No. 75-20

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10199880
Published by NHTSA2021-08-04
Manufacturer's numberNo. 75-20
Manufacturer's date2021-07-30
NHTSA componentTIRES; WHEELS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

List of approved wheels, tires and spacers for the 914, from Model Years 1970 to 1972.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Tires, Wheels

Vehicles listed
PORSCHE 9141970 to 1972

Listing a model year does not mean every vehicle of it is concerned: the document says which.