Thread: D4 towing - trailer wobble

Hi Ruby different model I know but same/similar problem. I have/had an 01 model and used to have sls towing a 22ft 2t van and was getting the same thing happening. (I converted my rear to coils/polyairs. I tried a lot of things to rectify it. I had the same level issues between both tug and trailer. In the end I put it down to the level on my van. I'm not saying do this but I raised the van height by doing an undersling on the axles and is level now, although not perfect, heaps better at tracking straighter behind my d2. My ball weight was also a little lighter than maybe it should have been. So yeah a level setup/correct ball weight in my opinion is needed to achieve happy towing. A hayman reece weight distribution set up helps a lot too


Steve

If the torsion bars are adjustable then you could relax the front one and increase the tension on the rear to effectively shift weight forwards. If no ready adjustment is available then I expect they would splined so need to be dismantled to adjust.

check the alignment of the rear axle and the condition of the suspension bushes.

you might just be experiencing what Ive started to nick name "shopping trolly syndrome"

Originally Posted by Sharkee

Hi Ruby different model I know but same/similar problem. I have/had an 01 model and used to have sls towing a 22ft 2t van and was getting the same thing happening. (I converted my rear to coils/polyairs. I tried a lot of things to rectify it. I had the same level issues between both tug and trailer. In the end I put it down to the level on my van. I'm not saying do this but I raised the van height by doing an undersling on the axles and is level now, although not perfect, heaps better at tracking straighter behind my d2. My ball weight was also a little lighter than maybe it should have been. So yeah a level setup/correct ball weight in my opinion is needed to achieve happy towing. A hayman reece weight distribution set up helps a lot too


Steve

Do not use a WDH on the D4.

Keep your hitches simple on the D4 as there is technology built into the car to detect and correct trailer sway. Fitting a 3rd party bit of kit will potentially upset this system.

M

Originally Posted by Blknight.aus

check the alignment of the rear axle and the condition of the suspension bushes.

you might just be experiencing what Ive started to nick name "shopping trolly syndrome"

I suspect you might be onto the cause here - wobble not sway.

Originally Posted by camel_landy

Keep your hitches simple on the D4 as there is technology built into the car to detect and correct trailer sway. Fitting a 3rd party bit of kit will potentially upset this system.

M

Unfortunately M, due to the nature of our travels/off road touring in Australia and what we choose to tow, the factory hitch (plough) is not suitable for use in many situations and has proven to be dangerous on some Discoverys, hence the Mitch hitch.

The wdh....well we know that this can't be used for any self levelling suspension, LR or other manufacturers.

My Mitch hitch effectively works with the trailer assist.....I have experienced this on a couple of occasions.

Brett.....

Hi Ruby2, My wife and I have a D4 and tow a Unicorn 2 horse angle. I think we saw you coming onto the freeway at Barker on Saturday when we were heading home from a show. We are able to tow at 100km/h (sometimes more) with no issue. The draw bar is rather long compared to the Cris and it is rather heavy in the front end. We have the tongue in the upper mode (looks upside down to a normal hitch). I would suggest sticking some water gerrys in the tack box and giving it a go or go see the float centre on Welly Rd at Mt Barker. If you want to have a look at my bus, PM me and we will see what we can arrange.