[ShrimpBurrito]

The more I think about tire blowouts, having both a 5-year-old Marathon and two 3-year-old Kumho blowouts, the more I am convinced there is not a systemic problem with any particular brand. If anything, the problem is across all brands, or ironically, none of them.

As far as I can tell, there are 3 major factors that contribute to trailer tire failure:

- age: the younger the better
- load: the lighter the better
- temperature: the cooler the better

Anytime any of these 3 factors reach high levels, your risk of failure goes up significantly. And if all 3 are high, you are begging for trouble.

I think users of 15" tires have better experience because they increase the margin of error for the load factor. They won't have as many blowouts as early as 14" owners, but they will if they wait too long to replace their tires, especially if they are heavily loaded and town in hot ambient temperatures.

So if you are usually heavily loaded and like to tow in the desert, even occasionally, you need to change our your tires every 3 years like clock work. Not 3.5 years, 3 years.

Perhaps wmtire can chime in as to his opinion.

Dave