Read a report written by the NTSB about tire failure rates. All bets off when they hit 6 years old. Study showed dramatic failure rate at 6 years and beyond. Not knowing that, I had what I thought were great tires, not knowing that they were 9 years old with very little miles. Pulled 700 miles to Florida. Heading back home I blew two tires in two days in 90 degree plus heat. Underside of fifth wheel took it tuff but repairable. My tire dealer agreed with the NTSB. Lesson learned, new tires at 5 years no matter how they look.
