I think you may be overthinking this. I'd suggest wandering around a couple of car lots that sell dually trucks with a tape measure. Look for dually pickups and box trucks and even school busses.

One reason I say this is look at the tracks trucks make while making any kind of turn. You often have as many tracks as tires but yet it does not create an unsafe condition.


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...