MFL wrote:
You don't say what air pressure you are running the rears at, but having the correct amount for your load may help.
Jerry
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X2
Most of the duallies only need 65 inflation in the rear for full axle load(Ford RGAWR 9650). Empty, 35-40 will greatly increase the ride quality.
No free lunch here. For years the Ford's have needed air bags because of the soft springs if hauling heavy. Sounds like the soft springs are gone. So correct inflation for the load may be the only way out without messing with the suspension.
Here is the inflation info for LT245/75R17E in DUAL application.
PSI Load rating
35 1610
40 1770
45 1920
50 2040
55 2210
60 2350
65 2535
70 2615
75 2750
80 2910