Not so Super Cargo Tires

I have had a lot of bad tires also so I went on line to read about tires and the good and the bad.I will share what I found and did do for My self. My Grand son was rideing a bike across Canada for Charity asking Us to be a rolling rest area the 5er with old tires I found the best tires I could they are 15"10ply Carile anew tire out for about 1 year I read about the new tire and thought this sounds good so called the company and talked to a rep this all sounded good called many tire stores and made a deal over the phone to pick up 4 in Port Huron Mi.at a fair price We live on the border so shop there a lot .The wife made a week end stay with Her Sister and Duty free tires.I mounted and balanced the 4 tires and installed High pressure stems keep the air in check and been great now for the last 3 years I drive about 62mph if real hot a little slower Heat and speed are bad news for ST tires just for Your Information I was in the rubber trade for 33-1/2 years and do know a little but retired 12 years ago...