040FF has summed it up well, Dingo. The only thing I can add is that the bullbars for both models are also different, the wide wheel one of course being a little wider. I looked into it myself at one stage but came to the conclusion that the only real advantage was in re-sale and on- road driving. In the latter I think there is a significant advantage, but I regard my wagon mainly as an off- road tourer. In this capacity I'm yet to be convinced that wide wheels offer an advantage despite the assumption of most that they "must". Meanwhile the 235x85 x16 that I use are lighter and cheaper, so I'm unlikely to change.