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I have a Isuzu 20/21 MU-X LST 4X4, with sway control with which I tow a full-sized caravan. Isuzu does not recommend or advise the use of a Weight Distribution Hitch (WDH). We do not overload either vehicle, travel at about 90km/h and hardly go off the bitumen. I keep asking different people in the know about WDHs, but get different answers. I have used them on other vehicles and vans. Never had trouble but would rather not use them. Any advice would be very welcome and thank you!
I presume your MU-X is a first-generation model, not the second-generation that launched in mid-2021? The latter is engineered for a WDH, but the former is not.
Many people think a Weight Distribution Hitch (and also known as load levelling bars) will alter a caravan’s level or otherwise. But the truth is that these are really only designed to transfer some of the tow-ball loading to the tow vehicle’s front axle. `Level riders’ as they are known are more of the same. Many car-makers do not recommend or even permit the use of these hitches, so Isuzu is hardly alone there.
The problem you face in using them in direct contravention of Isuzu’s own advice is that, if there is a problem on the road, you might find your insurance company will attempt to disown you on the basis of having ignored that official advice.
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