Tim's link (autopadre.com) is misleading in one or more instances.
Offset is a function of the vehicle design, but makes no significant difference in the strength of the wheel. Anyone who would put a zero offset wheel (trailer or otherwise) on a vehicle designed for high offset wheels is an idiot. (And I've seen a few of those driving around). Original Stovebolt wheels are zero offset, to that reason is out the window.
Bolt pattern is also a non issue. If it fits, then it should be as strong as the wheel designed for the original application. Again, bolting a wheel with the wrong bolt pattern on should be a non-issue, being reasonably impossible. Although again, there's probably some idiot out there who would try.
They mention higher vertical loads for trailer wheel/tire applications. But if a trailer wheel is rated for higher vertical loads, wouldn't it stand to reason that it would withstand the lower vertical loads on a powered vehicle?
