Michelin and several other tire manufacturers say 10 years is the maximum life expectancy on their tires in "Motorhome service". Some people believe it is 5 years because they will not warranty replace a tire over 5 years old. That said, we picked up a 1978 coach that was parked for 18 years inside and the tires were 20 years old then. The tires are now 24 years old and we still have them installed. I would never take it on a trip,, but we still use them to store the coach (inside) and move it around on very short trips of 15 or 20 miles or less. I do not think the coach has ever seen over 40 mph since we got it. Someday when we finally take it on the road we will definitely put new tires on it. So if the tires pass your inspection, plan on fixing all of the other stuff and put new tires on it BEFORE taking it on any actual trips.
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