Continental and Michelin recently issued Technical Bulletins on tire aging, joining a growing chorus of tire manufacturers and automakers issuing tire age replacement guidelines for the U.S. market. These bulletins are nearly identical to the Bridgestone-Firestone October 2005 recommendation that specified all tires should be removed after 10 years regardless of the remaining tread depth. They also follow guidelines published in overseas markets that have been in circulation for several years (Safety Record V3, Issue 1). Continue reading →