There is nothing wrong with your stock suspension. Coach manufactures would not utilize an inadequate chassis or suspension system. Manufacturers would not provide an unsafe chassis to coach manufacturers. That does not mean, however, that your suspension cannot be improved. Do not be surprised, in the future, if SumoSprings are original equipment on your RV model, as they already are on many new model coaches. Coach manufacturers want to provide you with a superior experience. SumoSprings are a superior driving experience when compared to your stock suspension. Coach manufactures and SuperSprings have great relationships and are continuing to work together to provide our collective customers a superior experience.