The when to replace automobile and truck tires question has been around for years, for example on Friday May 9th, 2008 ABC News Show 20/20 ran a special report on the dangers of old tires. Tires purchased by ABC News for the report although sold as being new were from 4-14 years old.
Ford, which has had its share of about tire safety problems, is urging consumers to replace their tires after six years. Tires degrade even when they're not in use, the company says, echoing the claims of safety advocates who have been pressing federal regulators to take action on the issue.
The tire industry disagrees and says that tires are safe as long as the tread depth is a minimum of 1/16th of an inch, no matter what the age, and as long as there are no visible cuts, signs of uneven wear, bulges or excessive cracking. Other trouble signs are if tires create vibration or excessive noise.
As stated by a tire installer, "Newly installed on the vehicle, manufactured on what date, your guess is as good as mine". So in reality we may be riding around on what is really a 14 year old tire when it was only installed on the vehicle as a new tire last week. This is really comforting when traveling at 80 MPH.
I don't have a fear or foresee the Federal Government enacting legislation mandating consumers change tires after a certain number of years have elapsed. I do see them enacting legislation to insure CONSUMERS when purchasing NEW TIRES are sold NEW TIRES not something that has been setting on a warehouse shelf for 14 years.