My reluctance to use taller tyres on a Land Rover (under desert conditions, specifically crossing the Erg's) is due solely to the relative weakness of the LR transmission system as a whole, and the half shafts, and diffs in particular. The 110's components are designed around each other and introducing extra stress due to a non standard part (a taller tyre), could, when trying to ascend large dunes for example, cause failure of a diff or half shaft. Not recommended when you are 4 days from the nearest town. I understand that Land Cruiser transmissions are over engineered instead of just adequate, and can cope with bigger tyres, to a point, no problem.
I hear what you are saying about the footprint being bigger offsetting the increased strain on the transmission, but the wheels still have to be forced to turn in soft sand and on steep ascents with heavy loads - I would still be worrying that something on the 110 would go pop at just the wrong moment.
Having said all this, is 33 inches the biggest tyre you can us without mods? It's only 1 inch more than standard - would it make much difference?
Regards,
Andrew.
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