Mark, you may be right.  Discount does now list the tire as for trailers.  So do some other places, and there seems to be less information published concerning the tire than there was 3 years ago.  However, this was interesting:

http://blairs.co.nz/shoppingcart/pages.php?pageid=43

If it is accurate, the tires that come on the Mercedes Sprinter all over, including in the U.S. are Kumho Radial 857 .  The copyright on the page is 2012.  mcneely

---- mark drillock <mdrillock@COX.NET> wrote:
> It is not just TireRack saying they are for trailer use. The Discount
> Tire website now says it too, along with many others. I wonder how easy
> you would find it now if you went in again and tried to get some to put
> on a Westy. I can see some tire guys refusing to order them just on that
> basis. It might take some talking.
>
> Mark
>
> mcneely4@cox.net wrote:
> > Mark, what I can blame people for is not paying attention to legitimate information that describes the tire and its uses, including Kumho web pages and references to them by folks who have investigated the tire.  Karl was fine with the tire only after his conversation with his engineering buddy.  Fine.  Good for him for wanting to be sure.  But when the tire is marketed worldwide for van, bus, and truck applications, including in the U.S. though mentioned secondarily here to its trailer application because of size only, why would people be so silly as to rely only on Tire Rack?
> >
> >

--
David McNeely