Mine drops 2 inches and rides level without air. Mosts trucks are high on the back when unloaded.
I did add spring plies and it improved the ride loaded and no change unloaded. I did it to protest the main ply that are prone to break on F250 and F350 SRW. Just the other day my cousin found 2 broken main ply on his F350 SRW. He was wondering why his truck was all over the road and I pointed out his problem.
Barbara and Laurent, Hartland Big Country 3500RL. 39 ft long and 15500 GVW.
2005 Ford F250 SD, XL F250 4x4, Long Box, 6.0L Diesel, 6 Speed Stick, Hypertech Max Energy for Fuel mileage of 21 MPusG empty, 12.6 MPusG pulling the BC. ScangaugeII for display..