Stroker,
What is the difference between running radials on a car and a trailer ???
I had the Cobras on the trailer for over 5 years and they were still in good shape when they came off.
You have the weight of the trailer, plus the car. You cannot use the standard automotive rating system when shopping for trailer tires. Because of their positioning, trailer tires have more load on them. Trailers are designed with the tires very close together, so, the weight has a smaller point of concentration and tire wear is accellerated. If trailers could be designed with the tires at the corners like a car, it would be a different picture altogether. That's the reason that 8 and 10 ply tires are not enough for a car hauler. For one that might be used only two or three times a year, you can get by. However, if you use it draggin the thing back and forth to the strip a lot, you better step up to some "real" trailer tires like I posted. The reason I like the biased ply is because unlike the radials, the biased plys "hold" their footprint better. They don't have the "sway" that radials do. They are a lot more stiff in comparison and hold their shape whereas radials "squirm" when they hit the pavement. While those characteristics are desireable on a car, the opposite is true on a trailer.