Quoted from a tire website:

"Trailer Tire requirements differ greatly from automotive tires. Automotive tires must maintain traction during all driving conditions: pulling, stopping, turning, or swerving. Because of this they must have more flexible sidewalls to maintain tread to road contact. Since trailers have no driving torque applied to their axles, the only time trailer tires must have traction is during the application of trailer brakes.

Trailers with heavy loads, high vertical sideloads (like camper trailers), or trailers with inadequate tongue weight can be affected by trailer sway problems. Automotive bias or radial tires with their more flexible sidewalls can accentuate trailer sway problems, whereas the stiffer sidewalls of the ST (special trailer) bias ply tires help to control and reduce sway problems. For this reason it is not recommended that (P) Passenger or (LT) Light Truck tires be used on trailers. Best trailer control will be achieved with (ST) Special Trailer tires. "

That being said I think I may try some LT tires next for my car trailer. I burned thru a set of ST trialer tires last year and think its time to try something different. I do a LOT of gravel roads and think the trailer tires just aren't able to stand up to it.

I disagree with the comments above about getting flat spots while the trailer is sitting with trucks tires. You'll get worse flat spots with a bias ply trailer tire than you will with a radial truck tire. In any case after 5 miles the tire heats up and the flat spot is gone.

 

ST tires may not have the speed rating that LT tires have???
Personally use my cast off truck tires for trailer if have good tread. Less spares to carry. With load on trailer I make great effort to reduce twisting of tires during turnes.

 

ST tires are rated to 65 mph. I went with LT Yokohama's on mine that were spot on the trailer manufacturers numbers. LT's may not have the scrub resistance, so some care in turning is sensible.

 

That's my main concern...things are tight at my storage facility, and I have to make a really sharp in reverse to get it onto my spot.

 

Its tough to say about tight turns, I think its going to be a combo of tights turns and weight when it comes to problems with tires BUT if you are worried about a lot of tighter turns then your best bet may just be trailer tires.

I still use LT tires on my trailer even though I have had a few problems with my tires due to tight HEAVY turns but now I just limit myself to the turns I will make when im loaded now I just have to worry about broken belts and loosing tread

 

LT tires don't come in 14 inch do they???

 

I think I have seen some LT's in 14 inch, but only one size like 205/75/14

 

I've never bought a trailer tire in my life - just use up the take-offs from the trucks. Never had a flat on the road, but plenty of slow leaks and 3 cases of the tread remnant blowing right off the tire carcass in the parking lot under the hot Texas sun.

The aluminum GN I built has 4 spares under the deck, so I don't worry about scrubbing the tires in tight quarters - with the extended reach, I can jacknife over 120 degrees.