The way charlie D asked his question of a direct replacement can get a not recommended from any LT tire maker. He has backed the tire maker into the liability corner.
Another way to get your LT tire warrant denied is when asking for warranty help from the dealer and mention to him the LT are replacing ST tires.
To all that are unaware of liability issues regarding replacement....... when asking a tire dealer for service or the LT or even a P tire mfg which tire they recommend for your trailer don't pull a newby mistake and mention your replacing a ST tire. Unless your looking for help in making a point.