Your friendly tire dealer can find out if your Michelins were on the recall. I thought that some of mine were not included from the codes but found out that all six were covered.
Appearance of tires, tread depth, etc., of RV tires means nothing except for obvious sidewall cracks. Figure on replacing all six tires every 5 years especially if rig sits parked and undriven most of the time. Keeping tires covered and driving just to exercise the tires will help extend useful life and help prevent tire failure with potential loss of control and damage to the stuff under your RV from the whipping steel belts.
