Camper van dimensions: what to measure and why

The height in the brochure was measured in a factory, on an empty van, without your solar panel. The height that matters is the one you drive under.

Height is the one that hurts

Everything on the roof adds to it: solar panels and their brackets, a roof vent, an air conditioning unit, a satellite dome, an aerial, a roof box, a raised bed conversion. Measure to the highest fixed point on the van rather than to the roof line, and measure it with everything you normally travel with fitted.

Then keep a margin. Bridges, car park barriers and tunnel gauges are not always signed accurately, and a van sits a little higher when it is empty and the suspension is unloaded.

Your mirrors are part of your width

Registration documents usually give the width of the body. Your driving width includes the mirrors, and that is the number that counts on a narrow mountain road, in a coned-off lane of roadworks, or on a ferry deck. Awning rails, ladders and side steps add a few centimetres more.

It is worth knowing both: the legal width for paperwork and tolls, and the real width for deciding whether you fit.

Length, with everything attached

A bike rack with bikes on it, a towbar, a spare wheel carrier or a rear storage box can add half a metre. Ferries, tolls and campsite pitches are sized and priced on total length, and a 4.90 m van quietly becomes a 5.60 m van the moment the rack is loaded.

Weight, loaded rather than empty

The interesting figure is not the kerb weight but what the van weighs the way you travel: full water tank, full gas, tools, bikes, everybody on board. Payload disappears faster than most owners expect, and an axle limit can be exceeded even when the total looks comfortable.

A public weighbridge is cheap and settles the question properly. Record the result, and the front and rear axle figures if you can get them.

How to measure it properly

• Park on level ground with the tyres at normal pressure
• Measure to the highest, widest and longest fixed point, not to the bodywork
• Two people and a straight edge beat one person and an estimate
• Measure again after fitting anything to the roof or the back
• Write the numbers where you will have them without a connection

Where you will need them

Car park barriers. Ferry and tunnel booking forms. Toll categories. Campsite pitch limits. Height-restricted routes and low bridges. Washing bays. Almost always at a moment when you cannot go and measure.