hotpepperkid wrote:
Get rid of the ST tires and go to LT then you don't have to worry about the speed rating of China made tires. They will have the same speed rating as your TV
seems like that is a very common "solution" commonly suggested. However if you have 15" wheels, getting a LT tire with a load capacity of an ST is virtually impossible if you have 225/75-15 ST tires, LR D or E. I know of ONE mfg of a 225/75-15 tire with LRE LT and they are very very specific on the website that the tire is NOT to be used on trailer applications.
There may be others, but again they are pretty rare animals.
If you have 205/75 LR C, then there are more LT tires that would work.
And going to 16's may or may not be possible depending on axle spacing and clearance. At the least it means new rims and a careful check for clearance.
Now if the trailer has 16" to start with, much easier.