Deege,
With what we carry, inc driver, they are on the max payload, we work local doing domestic, 1 clx, 1 hose reel with microbire and only ever half a tank of fuel max. And the half a tank happens in all my vehicles, vans cars, never drive around with a full tank in anything.
It's not overloaded as it's been weighed with how I operate, so what's the problem?