So, we've decided to upgrade our 2018 Swift Challenger 480 (2 berth) and are searching for a suitable 4 berth. We will be towing it with our 2019, 240bhp Volvo XC60 T5 (petrol) Inscription. Many of the caravans we are now looking at are twin axles. Having never towed with a twin I could do with some background info regading pros and cons. Apart from the obvious advantage that heavier vans are more stable with 4 wheels than 2 and the disadvantage that 4 tyres are more expensive to replace than 2 is there anything else to be considered? I'm sure there is. For example do it need 4 motor movers or will one either side suffice? Any tips gratefully received.