Having rubber torsion tandem axles instead of leaf springs makes this situation even worse. A rubber torsion tandem axle trailer will have the entire weight of the trailer (less the tongue weight) on one axle when the trailer goes over steep bumps like going out of a severe inclined driveway. Some rubber torsion axle manufacturers recommend using axles at 1.25 times the load required for the weight of the trailer to compensate for this issue. The leaf spring tandem trailers will have an equalizer that eliminates this issue for the most part.