Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Iron tires .... nice, but I don't think that one is capable of actually "hopping" on your trailer all by itself. I suspect that you gave it a bit of incentive
and possibly even hopped it on there yourself!   ;c)

When new rubber is more than the value of the tractor, it's the way to go 

Now to make some road bands...