Max Mass Pro is free. Max Mass Pro is a simple to use 5th wheel optimisation tool for the heavy transport industry for use with prime movers.

When a prime mover is made and delivered, the vital statistics provided by the manufacturer are wheel base, steer tare weight, driver tare weight and the optimum position for the 5th wheel. When these measurements are taken, they are taken when there is only a few litres in the running tank, there is no driver in the cabin and none of the normal fitments most companies make after delivery.

This means the 5th wheel position as set up by the manufacturer is seldomly in the right place. Max Mass Pro recalculates where the 5th wheel should be, it also indicates that if it is in the wrong position how much payload you are losing.

Screenshot of MassMax Pro