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Archive for February 20th, 2007
Age of Tires
Posted by Ron on February 20, 2007
Hi Tim,
I have a 1977 GMC Motorhome that I purchased with 6 - 225 75R16 LR-E tires. The tires have less than 10k on them and the motorhome has been stored for the last five years. The tire year code is 2001. The tire sidewalls literally look brand new with no weathering of any kind. I have read that for this type of motorhome the tires should be swapped out every five years no matter what. However these tires are like brand new. Could the tires have cracking on the inside and not the outside? Should I have one of them pulled and checked internally? Or should I quit being paranoid and just run them for a few years more?
Goodyear does not state a "uniform" replacement age for tires because there are many conditions that dictate a tire's safe and effective life span. Some factors that influence how long a tire will last are:
Usage per year - more frequent usage will result in longer life
Vehicle storage practices (6 months loaded with little or no rotation is not good!)
Usage in warmer climates can also negatively impact a tire's overall life due to greater extreme ozone exposure
A tire should be replaced when cracks are more than 2/32 " deep or internal components of tire (steel or fabric body plies) are visible. However, the tires in question should be inspected by an authorized Goodyear dealer to determine whether or not they are serviceable.