Tires

Six year old ST tires they would have been replaced already, same age LT tires with little usage and no evidence of cracking of tread separation I would run another year and reinspect every season. I imagine the reason you are posing this question to the forum is you prefer not to replace them for this upcoming RVing season, whatever decision you make it should not be solely based on opinions gathered from any forum. Rather, do your own tire inspection and research the brand of tires on your tow vehicle, ask a mechanic or tire store if in doubt, ultimately it is your call whether to wait or just purchase new.