2 Separate Blowouts on RV Yesterday. Learned Important Lesson on Tires

We planned a little 5-day trip up to South Bend Indiana. My Grandson from Canada starts Notre Dame Next week. We were going to spend a day with him and my daughter and son-in-law. We left Topeks Sunday morning and got about 40 Miles when the right inner tire blew out on the Class C RV. We were really close to Lawrence (Go Jayhawks) so I limped into town and found a place to install a new tire. 2.5 hours later we are on the way again. Picked up my other daughter (and 6-year-old granddaughter) in Kansas City and headed East. We got about 70 miles, and the LEFT inner rear tire blew. Now let me say that the rear tires were not (in my opinion) that old and they had probably 70% of the tread left. The front tires are from 2020. The roadside assistance guy who came to install my spare after the 2nd blowout told me that I had blowouts because the tires were 8 years out. He said that RV tires need to be replaced at least every 4-5 years. Hes said they sit outside and the elements and sitting in one spot for long periods take a toll. I did not think that 8-year-old tires that looked REALLY good were a problem, but now I know. Just wanted to share.