by Corwin C » Wed Feb 20, 2013 11:31 pm
I think that the varied responses that this subject brings up really depends on the design of your trailer and the terrain that your trailer actually sees. On a tandem trailer that gets maneuvered around while heavily loaded, a stiffer sidewall is important to keep the tire from rolling off the bead, but on a single axle trailer the trailer tires will never see more side force than the TV does. I doubt that there are very many of us that are drifting our trailers around corners. It's important not to get to far away from the manufacturer's intended use for a tire. Generally, car tires are designed to see a relatively consistent load at high speed on smooth surfaces. Most trailer tires are designed for widely varying loads (both weight and lateral loads) and moderate speeds on smooth surfaces. LT tires can vary from one extreme to the other and some are designed to resist abrasion and puncture that would shred other tires. This is important for off-road and farm use.
In my experience, I use car tires on my TTT ('68 Aristocrat that doesn't get very far from pavement because it sets quite low and drags bottom easily), trailer tires on my flatbed car carrier (usually heavily loaded tandem axle), and light truck (LT) tires on most of my other trailers (they all see off-road and farm use.) When the trailer tires wear out on the car carrier I'll probably switch them over to a highway tread LT also (I'm not real impressed with the trailer tires.) If you are on pavement or good gravel/dirt roads all the time, car tires with their softer sidewalls will improve the ride and will most likely perform well. But if you get in the rough (sticks, brush, large rocks, etc.), they probably will not last like a heavier duty tire will. My tear will see some terrain that a typical car may not be able to navigate, so I'm planning on highway tread LT tires (I'm also a fan of the bigger diameter and narrower tire/wheel look.)
Corwin
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and no one should be expected to accept anything less. -- myself