re: How long do your boat trailer tires last?

Another thing to remember is if the trailer has some for a long length of time without moving it will weaken the flat spot on the tire where it contacts the ground. Tire will look fine but once heated up at interstate speed it will throw that 1 foot section of tread completely off the tire. I tow 5-6 hours each way several times a year so ask me how I know..
Last time it happened to me it ripped the entire diamond tread fender off that side of the trailer, so that tire cost me over $500 to repair everything.