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Service bulletin SB-19-25

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 id10160525
Published by NHTSA2019-05-28
Manufacturer's numberSB-19-25
Manufacturer's date2019-04-10
NHTSA componentEQUIPMENT; TIRES

NHTSA's summary

This retrofit installs Michelin Tires 315/80R22.5 on the axles of the bus and relocates the front ABS Modulator Valves to accommodate the wider tires.

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

Vehicles listed
PROTERRA CATALYST2018

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