Hey Bill, that's sort of the issue, the load rating. They are M/T Sportsman S/R Radials, 24x5.00R15LT....24" tall, 4.5" rim size and 4.5" tread. The problem is that none of the websites or catalogs show load rating so when I got them I got concerned because the rating is real borderline at 900 lbs. The speed rating is fine at 130 mph. In doing some research the load rating is most linked to heat build up and I'm wondering since I'm only going to use them at the track is this a safety issue or not.
In looking at several blogs it's kind of all over the place out there with guys running all sorts of stuff inluding VW and some other european metric tires. They don't seem too concerned about load rating and drive them on the street but I don't think that's a good idea (this is the LS2 Camaro nitrous crowd). There are a lot of bias tires out there but very few radials with treads of 5.5 in. or less. Any experience or opinion??? thx...Dave