We have fitted Firestone Airbags and have been running them 12 to 15psi and have found they work well with my single axel Kedron off road van. The air bags firm up the rear end of the LC200 and provide some damping. However, we have decided to get a suspension upgrade with Lovell springs and Aussie Ryder shocks from Ultimate suspension. The suspension upgrade we plan will give no lift to maintain a good tow height. We have the Toyota off road hitch and the van sits almost level with a small drop at front. We use the McHitch auto hitch and no WDH with 220Kg tow ball weight on a single axel van.
The height of the hitch is very important it took a bit of hunting around to get the right height. The off road Toyota hitch works for our van, other vans will be different, but the Toyota hitch is well designed and brings the pivot point close to the tow and the McHitch give a stable solid connection.The main reason for the planned suspension upgrade in the next couple of weeks is the soft feel to the standard Toyota suspension on rough surfaces. The OEM suspension works OK for towing, but in our opinion it is a bit too soft. The upgrade should make good towing even better.
The minimum mod to LC200 suspension in our opinion is a set of airbags either Firestone or Polyair for smooth towing. If $ permit think about upgrading the rear springs to a good quality progressive spring (Lovells, King or Carrolls) and upgrade shocks. If you can afford it get both front and rear done with shocks and springs. It is all about how many $ you are prepared to spend to get a good towing and off road ride.
