Twin axle pros and cons?

Sep 2, 2023
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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.
 
Mar 14, 2005
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The chassis of a caravan with two axles obviously weighs more than one with a single axle, thus increasing the MIRO and consequently reducing the payload potential within a particular MTPLM constraint.
A twin axle is less manoeuvrable than a single axle and tends to churn the grass up more when pitching. For this reason, some campsites, particularly on the Continent, won't allow them.
 
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Jun 20, 2005
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There are plenty of SA available that have greater weights than a TA. Adria for example.
I’ve had both.
But you must ensure whatever you choose
Your car is capable of handling the MTPLM

You fully understand setting up, the weight balance within the caravan itself.

Ok , assuming all correctly loaded.,so I’ve had both. No question the TA is more stable, less prone to being affected bysevere crosswinds.
A quad drive MM is an over kill imo. We have a simple Powrtouch single fitted on the front axle.
Easy to use but be patient . No pirouetting like a SA but easily managed
 
Mar 14, 2005
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You cannot avoid the side scrubbing of tyre when you have a TA. They are almost impossible to turn if you are manually trying to position it. A caravan mover is a big assistance - Some single axle mover must not be used on TA's Follow the mover manufacturers adv

Some users of TA's swear they tow better, and that will be a matter of personal experience, but part of the possible reason is that TA caravans tend to be longer, and that can reduce some of the forces that contribute to instability.

When hitched, longer caravans (SA of TA) are generally easier to reverse around corners as the trailer is slower to try to jack knife.

Proper tyre inflation is just as important on both the car and caravan.

Nose load (A contentious issue) becasue of the geometry of the suspension and its interaction with the caravans centre of gravity, it's more important than ever to ensure your nose load is set correctly for the height of the tow hitch when the trailer is coupled.
 

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