US regulators have decided not to reopen an investigation of Firestone Steeltex tyres, a source familiar with the decision told Reuters on Monday.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

The National Highway Traffic Safety Administration has been weighing whether 27.5 million heavy duty Steeltex R4S, R4SII and A/T tyres should be investigated again for a potential recall, the news agency noted.

Reuters said an earlier probe by the safety agency found no defects and the source said regulators have decided against reopening that case and will post their decision shortly on the NHTSA website.

Steeltex remains the subject of a class action lawsuit that accuses Firestone parent, Japan-based Bridgestone Corporation, of concealing Steeltex defects, Reuters said.

Just Auto Excellence Awards - Nominations Closed

Nominations are now closed for the Just Auto Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Continental has secured the Window Displays Innovation Award in the 2025 Just Auto Excellence Awards for its Window Projection solution, transforming side windows into dynamic, data-rich canvases. Discover how this compact projection technology and intelligent software are reshaping in-car UX and opening fresh revenue streams for OEMs and mobility providers.

Discover the Impact