My experience with the average RV types, indicates mostly non mechanicly inclined nice folks who tend to beleive ever word they hear with no idea what is real.
So I feel listening to that average poster is a lot of horse hockey.
Just my opinion from 25 yrs of. listening to horse hockey
So, what do you believe the proper age to replace tires at is? I've heard numbers all over the map from 5 years to 7 years to 10 years to folks who won't replace them until the tread is gone even if it takes 20 years. I have no idea how often tires should be replaced other than listening to others, or replacing them when the sidewalls are badly cracked.