Thread: Disco 4 - 2.7l Caravan stability

Hi freopete,
As others have mentioned running a WDH on an air suspended D3 or D4 is a No No! What tends to happen if you do is that you end up with the levelling suspension and the WDH fighting each other for the "correct" height. This will damage the air suspension - not a good idea.

Again, as others have mentioned, check your nose weight, the caravan tyre pressures, the D4's tyre pressures and make sure that the towball is set to a height to make sure that the caravan is level.

To put you in the picture, I run an 18' caravan behind my coil-sprung D3. I took care of the items above and have dream runs.

I know that this isn't relevant to you, due to your experience, but I had a friend driving my D3 with the caravan on back out near Kings Canyon. It was a relatively narrow road, but I was confident that we could overtake a slower vehicle in front.

As we came alongside the slower vehicle, the D3/caravan assembly started to fishtail. I thought that she would correct it, but couldn't and started to become distressed, asking me what to do. I just reached across and held the steering wheel steady and we carried on through. (She'd been overcompensating for the movement.)

HTH someone,
Peter

Originally Posted by davman

This is a question for Disco owners towing a heavy van. I have spoken to a few people regarding the air suspension in the D3. Given that the self levelling suspension manages the ride height, there has apparently been a few problems in the past over rougher terrain/road bumps etc, where the suspension gets a little confused as to what it's height should be, and hence the whole setup gets a little unstable with not enough of the front of the car on the road. Apparently some D3 drivers with air suspension experienced this and some not. Has anyone had any problems towing with the D4 like this.
Thanks

I have a new 3.5t van, with 260kg ball weight and a D4 3litre and exactly the same problem as listed. My D4 pulls the van with ease but is difficult to steer around corners and if the road is undulated the ride is similar to a small boat in rough seas.
Brian