It's not super common but there are DRW conversion kits for full size vans (both Savana/Express and Econoline), in passenger van or "church van" configurations (15 passenger... I think) it was apparently very easy to be way overweight on the rear axle if the van was full with standard adults. There's been a few tragic accidents in the past. I've seen a handful that had the conversions (they run about $2500) but I'm not a big fan because it's essentially a stud/hub adapter and not a full hub assembly. I've been discussing either a hub swap or complete axle swap (to the cutaway DRW axle), and I might tackle that at some point but it hasn't been an issue in my use case so far so it's not real high on the list.
I spent a few years in the tire business (managed a few shops for a large chain and did sales training) and it's been many, many years since I've had any inside knowledge but I can tell you that you absolutely will not find an American made trailer tire... Chinese manufacturers copied the tread design of the Goodyear (I can't remember the model... it's been around forever) and started re-branding them and absolutely destroyed the margins. Trailer tires were a prime target because they don't need to have a nice ride or low noise... or even decent QC (trailers beat the tires up anyway...). If someone tells you it's made in the US they're almost certainly lying... even in the name brand tire world it's nearly impossible to tell if the particular tire you're buying from a company such as Michelin was made in the US, France, South America, China, Vietnam... they all run manufacturing facilities all over the world. They may claim they make that particular tire in that particular size in the US, but you can bet that they run a much larger volume out of countries where the labors cheap and the oversights weak.
A friend that works at Discount Tire told me about the Taskmaster, it's a DT house brand and I was intrigued right off the bat not only because it's not just another clone tire but because it also comes with a speed rating (81mph) and they offer it in F for a surprisingly fair price... $87 (for my size) through there direct site (ships to you) but I was able to get an even better price ordering from my local store with a commercial account. My plan is to run the two I have on the way for a couple trips and see how they do and assuming they perform as expected I'll swap them all out before winter gets in full swing. In my experience when it comes to private label/import things like this the biggest factor that drives quality is oversight and QA from the company that's doing the private labeling. In this case it's Discount, who from what I can tell seem to operate a really good business, they pay fair (far above similar positions at competitors) and take care of their employees/make it a nice place to work. You can also bet they have "fixers" and other people dedicated to keeping there overseas manufacturers from cutting corners... it's not one or two people operating an LLC out of a UPS mailbox and marketing online. They also seem to have a very straight forward road hazard policy that isn't fraught with the usual "gotchas", and from what I've seen over the last year I've been buying from them they have very fair pricing, and won't hesitate to price match (even when I don't have them installed, I have machines at my shop and prefer to do it myself most of the time). As a consumer with experience on both sides of the desk that's pretty swell. I might eat my words if these tires turn out to be junk... if I end up swapping them all out I'll list the old ones on craigslist/facebook for a super good deal... gets them out of my shop and helps save someone a few buck, win-win.
