I have read many posts about tires here since I joined POG. My bus chassis is now just shy of 6 years old and the tires are original Michelins. We have owned the bus for about 20 months now, and have 30,000 miles on it (total). The bus sat in the hot Texas sun for about 2.5 years prior to our purchase.

I have no cracking on the sidewalls, and have great tread left. I talked to my old tire dealer (from when we were in the trucking business) about when he thought I should replace the tires on the bus. His opinion was to wait at least one or two more years, or if cracks develop in the sidewalls. He didn't think there was a magic number until one gets closer to the 10 year casing life Michelin uses.

What does the brain trust think? Does this seem right, or should I replace them sooner??