Trailer tires are engineered to withstand different twisting and such while turning. Car tires are not made with the strength of side wall for this. Go onto a website that carries tires and read up on it a bit. I used to use only Tow Master Tires, as Carlisle Tires were having problems mostly out west in the heat and higher speeds. Discount Tire did not have Tow Master last year when I replaced mine, only had Carlisle. I was assured that the engineering in the Carlisle had been changed and I would not have any issues. I have almost 10,000 miles on them now and have had no issues. Discount Tire does my tires on all my vehicles and they are close by. Everyone has their own comfort level or reason for tires, vendors etc. these are mine. Good Luck & Be Safe ! ! !