Is there a single tire/rim that can give me the equivalent of dual rear wheels? I've seen the 465s that big trucks use to replace their dual combinations. I wouldn't mind running a wider rear tire with a stiff sidewall.

Am I barking up the wrong tree? Am I at least in the right forest?

 

Single 19.5" tire/wheel assemblies can give you the same or higher weight capacity as dual load-range G 16" or 17" tires.

http://www.ricksontruck.com/ is one example.

 

Not realy a load issue but I had a boddy in high school put a large set of micky-t supersports under his dually after he built up the 454 with a blower and all the go fast goodies, pulled mid 10's in the quarter and drove it almost daily. those huge tires didn't need no stinking tubs under dually fenders!

 

Thanks for the link. That's sort of what I'm looking for.