Originally Posted by gbaglo
Well, ST tires are designed for the application. They are for trailers.
Yes, and by far the most important aspect of the trailer application is that buyers want an exceptionally cheap tire, with adequate load capacity in a small size. This is why the 3500 pound capacity axle on an Escape is carried by two tires which are smaller than anything you'll find on a car with much lower axle capacity.
LT and commercial tires are for driven and non-driven positions on severe-service vehicles, including trailers. ST tires are not appropriate for anything other than trailers, but of course that's not a problem when using them as intended.
Originally Posted by Doug2000
If I understand correctly, LT tires are Light Truck. Unless your running really tough trail in the dessert like the White Rim Trail just outside Moab Utah, why would you put LT tires on your trailer.
Typically people chose LT tires for trailers...
- to get sizes that they cannot get in ST,
- to get load capacity they could not get in ST (but higher load ranges have become available in ST tires),
- to get a higher speed rating than they can get in ST (but ST speed ratings are going up so that's less of a concern),
- to get better-quality tires than available in ST,
- to match the tow vehicle tires so they can use the same spare tires and even other components (which is common in Australia, but not here), and
- for appearance (such as a "rugged" look on "off-road" styled trailers).
Originally Posted by Larry L
... do LT tires come in the right size for Escapes?
No, LT tires are generally sized for recent light trucks, and light trucks haven't used 75-series tires for 15-inch wheels in many years. There are some sizes which would work in overall diameter and width, but would need 16-inch wheels... which are hard to find to match the trailer hubs.