'78 Crusader said:
When I looked at the dry rot on the old tires, I could see exactly where this boat sat in one spot for a very very long time. There was a spot on each tire where the dry rot was worse than the rest of the tire. I don't think that happens just by sitting two or three months, I think that happens during idle periods of a year or more. Strange.
Yeah, in that case you are probably right. But like my boat, although I use it often, it always gets parked in the same spot in the diveway. The left side tires see the sun all day and the right side tires never see the sun. After a couple of years of that my left side tires will be dry rotted and the right sides will still be like new, and you're not supposed to change direction on radial tires so moving them left to right is out, or in my case... It.