I absolutly hate trailer tires, IMO they use early 70's technology, radial tires are the way to go. I have a double axle trailer I pull everyday not real heavy but it wieghts in around 5500#'s. I found specific trailer tires where gone in less than a year and if they got a little low they would blow out. So I just go to walmart and for $33/tire I can get no name 225/75/15's and they have been on nearly 2 years and work great, they are more stable and track the road better and smoother. they are prolly not very good for heavy loads but work great on a lighter trailer. IMO use anything but a specific trailer tire