Dog Folks wrote:
I am not an engineer by any means, but with the tires side by side in a dual configuration, on one axle, I wonder if they could "scrub" enough to make a tight turn.
A dual tire on one axle is a very interesting idea, but I also have to wonder why no production manufacturer has tried it.
FYI, look at equipment trailers that haul backhoes, cranes and such. Most have dual axles with dual tires, so 8 tires in total, or triple axles with 12 tires in total. Based on the max capacity of the tires, you add tires as needed to carry the load.
RVs are not as heavy as the loads carried by an equipment trailer so no need for dually axles, probably why not common in the RV industry. But not uncommon for trailers in general.