Class C rattles teeth when hitting bumps.

pnichols wrote:
Shot leaf springs probably wouldn't create sharper bump jolts in the rear. Instead, shot rear leaf springs probably would cause a soft "squishy" feeling in the rear ... nice and soft ... but kindof out-of-control handling on curves,in cross winds, and on rounded rolling bumps.

I have a couple of the Koni FSD shocks in the rear. Their effect is subtle, but very real. For example, our Class C's shower is in the rear and has a curtain latch that used to always come out of position from the jolting in the rear. Now it never does. Road potholes and cracks now feel more "rounded off" and not as "sharp". Lateral roll control in side winds and when entering/exiting parking lots also feels more postive and stable. I'll be adding them in the front next year.

On curved winding roads the coach rolls less, it leans and then returns unlike before where it leaned then rolled back then leaned again, a repetitive rocking motion.

As far as the springs, my coach had 19K on it when purchased and basically was like new. Big rigs added shocks to air ride suspensions, they call them shock absorbers for a reason, they

absorb shocks, like a return spring they stabilize the motion so it is not abrupt . Oftentimes you will see a leaf spring configuration where a helper spring comes into play when the load is

real heavy yet the other spring leafs are less rigid to allow for a smoother ride. Rv's are weird, such long hangovers in the back behind the axle, water tanks behind the axle . 40 gallons

hanging off the rear adds 280 pounds plus storage cabinets full of junk etc. I moved all of my heavier items up front . Can't say it will make a difference in your rig but it sure did mine.