Tow Pro: Weight Distribution Bars

Hi Phil, Could you please comment about the need for Weight Distribution Bars on a Toyota 200 Series Landcruiser diesel towing a full-size 24' caravan with a weight of 2650 / 3050 Kg. The tow hitch is a Haymen Reece and air-bags are fitted to the rear suspension of the Toyota. The caravan has dual-wheels, Hyland Hitch and the suspension is coil / shock-absorbers. I have been towing without the bars and find the van tows very well but recently it was suggested to me that I should be using the bars for safety-sake. Thanks, Eddie

Eddie, NSW