GDS-3950BH wrote:
The tires on my GMC are stamped 1416 and they probably will last another 2 or 3 years on treadwear at least. Oh my God, they're 5 years and a month old. I had better rip them off and spend a grand before the Earth's rotation shifts, and we all go careening off into space. Nothing like living dangerously.
There does need to be some official clarification on how long tires should last. Dealers want to be able to sell old inventory at full price and not discuss the age with the customer while manufacturers want to deny liability for older tires.
Different types of tires seem to have different length of life and there seems to be some randomness in tires life. My experience has been that Michelin tires are great if you wear them out in 4 years or so but age faster than other brands. I had a van with factory Goodyear tires. Two of the five tires dry-rotted and starting leaking out of the sidewalls when only about 4 years old while the other three made it 6 years and were still holding air when the tread wore out. They all had the same manufacturing date. I have a set of Firestone tires on a trailer that are 8 years old and still look great. I don't think that I would load that trailer up and go on a long trip with those tires though.