Airbags are not always bad for conventiional trailers
I disagree that airbags are all encompassing bad for towing conventional trailers because one just wants to fix the sag. Up to point airbags are ok for sagging problems. One has to look at weight of truck, length of truck, distance from rear axle to trailer ball, percentage of weight front/rear when empty(Usually 56 to 60%). Also trailer weight and tongue weight has to be knowned. Calculate some of these parameters and the differences of weight shift can be figured by every owner. Fringe parameters would all the stuff my spouse packs in the access cab, two people up front and about 125lbs of skid plates up front, campershell in the back and everything else loaded back there. The ride feels better while towing because the rear is not riding on the stiffer area of the springs(when sagging) thus when hitting a bump the shock absorbers and soft area of the springs along with the airbags ~20psi.
In my case of a 3,000lb trailer and 400lb tongue weight I have not experienced anything that would make me purchase a WDH. I try to keep safe distances from other vehicles while towing, but driving experiences are not always perfect. I have had to do some heavy braking in the city and highway.
If I had A smaller/lighter truck(Tacoma) or heavier trailer(~4,000lb) with tongue weight of 500/600lb plus, then a WDH would be on the front burner for a purchase.
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