# Service bulletin 05\-79\-20R

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.

- Type: Service bulletin
- NHTSA id: 10201813
- Published by NHTSA: 2021\-10\-04
- Manufacturer's number: 05\-79\-20R
- Manufacturer's date: 2021\-09\-29
- NHTSA component: WHEELS

## NHTSA's summary

This bulletin announces a change made to the wheel lug nuts.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201813-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201813-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Wheels

## Vehicles listed

- 2013 to 2020 SUBARU BRZ
- 2013 to 2015 SUBARU CROSSTREK
- 2016 to 2020 SUBARU CROSSTREK
- 2010 to 2020 SUBARU FORESTER
- 2009 to 2014 SUBARU WRX
- 2015 to 2020 SUBARU WRX
- 2009 to 2014 SUBARU WRX STI
- 2015 to 2020 SUBARU WRX STI

## Other bulletins for the same vehicles and component

- [05\-97\-26](/bulletins/11032035.md), 2026-05-04, Service bulletin: STEERING; WHEELS. This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.
- [05\-94\-25](/bulletins/11023522.md), 2025-10-02, Service bulletin: WHEELS; POWER TRAIN. This bulletin outlines the repair procedure to follow when the axle nut has rotated from its originally torqued position.
- [07\-200\-21](/bulletins/10201798.md), 2021-10-04, Service bulletin: WHEELS; ELECTRICAL SYSTEM:HORN; STRUCTURE. This bulletin announces the design changes to the right front wheel apron.
- [05\-85\-21R](/bulletins/10191664.md), 2021-05-05, Service bulletin: ELECTRICAL SYSTEM; WHEELS. This bulletin announces a design change made to the TPMS valve assemblies.
- [05\-76\-20R](/bulletins/10188193.md), 2021-03-04, Service bulletin: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; WHEELS:HUB. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
- [05\-79\-20](/bulletins/10185090.md), 2021-01-05, Service bulletin: WHEELS. This Service Information Bulletin announces a change made to the wheel lug nuts.
- [05\-70\-19R](/bulletins/10185064.md), 2021-01-05, Service bulletin: WHEELS; SERVICE BRAKES. This bulletin announces a design change made to the rear wheel / brake backing plates.
- [05\-76\-20](/bulletins/10179421.md), 2020-09-04, Service bulletin: WHEELS. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
- [14\-24\-20](/bulletins/10173125.md), 2020-04-02, Service bulletin: WHEELS; EQUIPMENT. This service information bulletin outlines a procedure for Subaru Special Tool Kit number J\-53014.
- [05\-70\-19](/bulletins/10165552.md), 2019-10-01, Service bulletin: SERVICE BRAKES, HYDRAULIC; WHEELS. This bulletin announces a design change made to the rear wheel / brake backing plates. Under certain circumstances, some customers may have a concern regarding a howling\-type sound from the rear of the vehicle later diagnosed as a faulty hub / bearing assembly. Unevenness of the backing plate surfaces may affect the concentricity \(roundness\) of the hub / bearing after torqued during assembly and over time, cause the howling \-type sound to develop. Production changes for the backing plates have been implemented to optimize their mounting surface quality.

JSON: [/v1/bulletins/10201813](/v1/bulletins/10201813)

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