[Motor31]

Rodeworthy,

A "dynamic" weight shift is going to be rather difficult to calculate. I am assuming you mean the weight shift that happens particularly upon brake application. At least that's what I think you were referring to.

That is going to depend on a number of variables such as speed of the rig, condition of the brakes, actual amount of application of brake power for each vehicle, pavement condition, coefficient of friction of the pavement, weight of each of the vehicles in question and tire condition to include temperature and pressure. The amount of weight shift would change each time any of those variables would change.