On the surface, it makes sense that rarely used tires should last indefinitely as long as theyre properly cared for. But looks and low miles can be deceiving. The owner of a 1969 109 drove his car only occasionally on weekends, and he regularly cleaned and conditioned the tires. In the-eight years that hed owned the car he never felt the need to purchase new tires since they still looked great. An easy and costly mistake. One day while cruising down the highway, the rear drivers side tire blew out.
DAMAGE/LOSS: Fortunately, the Corvette owner was able to keep the car under control and pull safely to the side of the road, but it suffered considerable damage. The blown tire shredded the left rear wheel well and quarter panel of the fiberglass-bodied Vette. Cost of repairs was $5,215, which He paid.
LESSON: There are no hard and fast expiration dates on tires, but because rubber begins to crack and deteriorate over time, most experts suggest that eight years is the maximum safe life expectancy of a tire. If you dont drive your classic at all and it just sits on display, you can get away with keeping the original tires as theyll hold air. But if you drive the car at all, you need to know how old the tires are. The U.S Department of Transportation (DOT) requires that all tires manufactured since 2000 have serial numbers, and those numbers easi ly identify their age. Using the last four digits, the first two numbers will reveal the-week and last two the year. For example, a serial number ending in 4905 tells you the tires were made during the 49th week of 2005. If there are no recognizable serial numbers, you already have your answer the tires were made prior to 2000 and need to be replaced.