Tires need help

Thanks Huntindog, that is a good idea on the plywood. I learned that tires can look like new and still be dry rotted. My neighbor bought a cargo trailer at an estate sale that had been stored inside for 16 years. The trailer and tires looked brand new,I think it was never taken outside even once. Two of the tires blew within a week of lite hauling. You are right the first sign that your not camping enough is tires that time out instead of wear out.