seth said:A totally empty conqueror wieghs in at 1400kg.The tyre load rating is 88T ,this translates to 560kg each.Plus the normal 25% extra load bearing for unevenly loaded wieght.By my maths thats 1400kg or there abouts.
Running anything at 125% of its rated capacity (using up its contingency) is never a good plan. But you also make a good point about uneven weight across the axle, Its likley that even empty the caravan will also be uneven, thus one side will be more than 560. so its going to be over 125% one one side at least.
But It's not just about tyres, its all three elements the axle, the suspension and the tyres.
A further point which you alluded too earlier, If one axle is twisted, it must have had quite an impact. Who knows how the impact may have missaligend other componets on the chassis affecting the geometry and alignment of the remaining axle. The more I think about this caravan the more it shouts get it lifted and carried not towed.
But returning to the more recent postings, put quite simply attempting to tow a TA caravan with only one active axle is foolish. And in a non emergency situation like the OP's posting, the vehicle is simply not roadworthy and is illegal.