My rig is way under. Even loaded for track it never approaches what the bigger units.
I wanted to get other experience as I have yet to see or feel anything justifying replacement. I have looked for cracking and see nothing. I use 15" light truck tires on trailer and have seen cracking in tread sidewalls in 5 years on Firestone, 4 years on Goodyears from date of manufacture. On our Suburban the latest set of tires Continentals are dated 2011 and no dign of issue.
I have read that Michelin RV tires are prone to cracking. I keep pressure up bit do not really baby them, though they do not sit still much. We are approacing an off weekend, then will be used every weekend into summer. I will continue watching.
I have many people in line to take them when replaced, many of the race trailers use 16" wheels.
__________________
|