I read all about trailer tires and how I should not be running on old tires, but I have to say that my 1988 tires are still holding up perfectly. That’s right, 1988 tires. These are original to the trailer purchased new in 1988. When I bought this rig 3years ago, it had sat covered and tarped in a warehouse since 2002. The original owner told me the tires are original. I looked them over and found no cracking or checking at all. In fact, they still had the little nibs sticking Olof them. Last fall, I took a 1500 mile round trip with it and had NO problems at all. I keep the 50psi in them and they are performing perfectly. So am I asking for trouble, or do I run them till they are worn out?