Thanks 42782, now that I have the name, I found a couple of pictures. Memory lane.....Yes they were MRT's Marsh racing tires, I actually have one out in my shed still.
Here’s mineDoes anyone remember the slicks that were sold in the 70's or 80's that had the humorous text on the side walls?
Torque Twisten, Tire Smoken, Axle Bustin etc.
If I could get a picture, that would make a great avatar.