Thread: Handling of D4 + ARB Bull Bar + Winch

I suspect there's a reservoir pressure threshold below which all air is directed to the rear springs before continuing with the fronts. When the reservoir is empty, my D4 (bull-bar but no winch mounted) appears to only start raising the rear rather than both together, yet both ends start to raise when there's full pressure. The rear valve block has a smaller orifice to allow more air to the normally-heavier front to attempt to raise evenly when both are raising at the same time but mine has never completed a raise together.

My D4 3.0 has a lot of extras fitted which have added weight and taken the edge off the handling, but it's a question of what you want to achieve. Mine is a bit of an outback warrior which I am sure still out handles a lot of the other brands. I couldn't get the result without some sacrifice.
I'm running an ARB bar with winch, Kaymar twin wheel bar, 104 L aux tank, Black Widow drawers, roof rack, twin aux batteries and 82 L water tank.
The main weight adders are, I think, the two aux batteries, the second spare wheel, the roof rack (Front Runner 2.2 m), Hannibal Roof tent, Aux fuel (100 kg of fuel plus I guess 25kg for the tank), fridges (42 plus 21L Engel as I can't fit a 60 L and don't underestimate the drawers or what's in them).
She still handles well for what she carries. I just don't expect her to drive like a Lotus!
I'm mindful there's too much weight I my set up and if you didn't have the third battery or the Aux tank and two spares, the outcome would be much lighter.
If you're interested, she had an 8 page spread in January's Overlander.
I love my Disco ...