the answer is to run a duel equipped and a SRW Fuso over the same terrain at the same weight, at the same time, and get real world answers. There are enough of us (FG owners) in the PNW that perhaps we need a FusoFest and try out the difference set-up with wheel/tires. I’d bet we could even talk ATW, EC, GXV, etc into showing up. Talked about a mass of information that would become available from that ‘experiment’.
I’d vote for Coos Bay for the sand dunes, and the hills east for rough roads.
Put me down for a 2002 FG running 37”x16 SRW at 11,500 lbs.
So just as SRW gave me many more benefits then just ‘off-road performance’, derating my truck has had the benefit of in effect giving me more ‘power’, which I surly needed.

Here it is to scale (quick freehand). You can see the inside wheel is cutting new ground for the most part. This assumes a 2 inch gap between tires. If you are turning, the rears driving in the front track is moot (srw or dual). However, MOG is correct that even when turning, 6 wheels pushing sand is a greater resistance to 4 wheels pushing sand. If going straight one could say that 2 wheels pushing sand is greater than an equivalent 4 wheels pushing sand given some of the overlap. So there is a clear advantage to the singles here.
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Julian said there is "data" and there is "marketing" ......do you mind if I use your drawing for marketing??? Hahaha. Well done mate.
There is some great thoughts starting to come out in this thread.
Kind regards John.
My license lets me drive pretty much anything with wheels, so I have never really thought about this too much.i hate to think how many people are driving around in heavy motorhomes only with a car license.
On a more serious note ....
I reckon the sand I was driving through was 37% more difficult that other sand.![]()
According to USA Today, 85% of the people think their sand is more difficult than average.
I am curious of the actual track on a fuso. If anyone knows the offset between the center of the front wheel and the center of the two rear wheels that would be great and would really add to the fact pattern. Better yet a pic of the tracks in the sand would be most excellent.
I would certainly say the Body Builders Guide is more actual then my measurements.Fuso FE body builder's guide for 2004 shows the center of the stock front tire to center of stock front tire = 65.55" and center between two rear stock tires to same on other side = 65.35"




