I just replaced my 14" Goodyear Marathons...load rated C.
They came on a trailer built in 2010 but sold as a 2011.
Date on the tires? 2007.
Valve stems were cracking which led to a full inspection. Minor cracking between treads....with an upcoming 2000 mile road trip with a guaranteed 100 miles of old logging roads.
I installed Goodyear Endurance load rated D tires.
While I was at the tire shop....I inquired about LT tires. He said it was illegal in Ontario to install them on an RV trailer if they weren't originally installed by the RV manufacturer.
I took his word for it as I am too lazy to even care. :)
