Look at your OEM overload springs first. If they are not engaging until the rear sags too much, StableLoads will allow them to engage sooner reducing your sag. By using the blocks on the upper springs and wedges on the lower springs, I only lose about 1-2" of height off the rear suspension when loaded. Once I hitch up a heavy trailer, I use my airbags to get back to about 1" of sag. Since the StableLoads are not changing your spring rate (only change when the overload engages through preload), your ride quality should not be compromised.