Ryoung, you're completely off base. % of total weight is irrelevant. Actual load on the axle is what matters.
Empty truck, any truck, drop a big load in the bed, centered on the rear axle and the front sees the same weight as unloaded regardless of the %.
55psi on the front of a stock tire size dually (215-245 wide tires) is LOW unless maybe it's a gas motor. 50-55 psi in a wider tire like 285 wide is about min before it starts detracting from handling with a diesel.
As well, too much pressure for the weight does also detract from handling and braking. Harder tire = smaller contact patch and less compliant and greater rebound rate than a softer tire (less pressure). Ever see drag cars with a lot of air in the back tires? Nope, poor traction. Air up for more traction, nope, the opposite.
However, with a high CG load like a camper, the advantage of a bit harder front tire, even though the static load is the same or slightly more or less than empty, is less sidewall flex when the load is transferred laterally when the camper/truck gets body roll.
Think about it before replying.