Captain - 8/24/2015 9:50 AM

I have had my boat 5 years and one tire (shoulder of the road side) was having some edge wear so I decided I would swap my spare (never used since I bought the boat) for it. The tire "looked" fine, but when I jacked it up I had massive tread separation. I was hoping to use that tire as a spare, which at that point, the day before my Canada trip was no longer an option.
IMO the tires that are near the shoulder are the ones that take a savage beating. If you are ever on two lane roads, they are always off the side of the pavement. So rotating them every year is a good idea, I would even suggest rotating in your spare as well.
Even at that 5 years is a long time on these tires.
I have Good Year Marathons which is what my trailer came with and what I replaced my destroyed one with. Been happen with them. I don't think it was any fault of the tire just wore out.
I think this winter I am going to jack my trailer up to get the tires off the ground all winter. Its always inside, but just that static weight on that small contact patch I think it bad.