LOG wrote:
Our coach weight on rear axle is 9360 pounds. The axle weight rating is 9450. According to this discussion, the coach should not be pounding as much as a lighter weighted E450. Our coach pounds a lot and is the reason I am thinking about new shocks. I have never ridden in another e450 motorhome, shorter or longer. I do not believe that the pounding could be more than the pounding in our motorhome.
I don't question that what you're experiencing is what you consider as a rough ride. 9360 pounds in the rear definitely makes it appear that your RV is a heavy/larger motorhome on an E450 chassis.
However, your pounding with that heavy of a coach-plus-E450 weight combination in the rear does not make normal sense - unless you're suspension is either hitting the stops because your rear springs are weak, or your rear shocks are no longer damping much or at all.
When my rear suspension components are OK and my rear shocks are OK... my 4X4 pickup truck rides better with weight in it's bed (terrible with nothing in the bed), my heavy daily driver sedan rides even better with a full gas tank, and my small Class C E450 motorhome with Koni FSD shocks in the rear rides even better with full grey, black, and gas tanks (all in the rear).
Heavy carrying weight relative to suspension weight ratings is supposed to make for a smoother ride over cracks/potholes if shocks are right. Lighter carrying weight relative to suspension weight rating is supposed to make for a rougher ride over cracks/potholes - made even worse by shocks with heavy damping on those cracks/potholes.