How to measure your trunk
A tape measure and five minutes. Three numbers, and you get an answer on this page.
Already know your car is a common one? Skip the tape measure — check the cars we have already fitted first.
The one thing to understand before you start
A platform is almost a rectangle. A boot isn't. Almost every boot is deeper down the middle than at the edges, and narrower between the wheel arches than at the opening.
So you're not measuring your boot. You're measuring the largest rectangle that fits inside it — the narrowest width and the shallowest depth, not the flattering ones.
Elevation — the height you'll sleep at
- Fold half of the rear seats down.
- Measure 7 cm above the folded seatback.
- Measure 20 cm above the boot floor.
- Take whichever is higher. That's your level, and you'll use it for the next two.
Why two numbers? The bed has to clear both at once — the folded seatback it lies over, and the boot floor it stands on. Whichever pushes you higher decides your elevation. In a car with a deep boot the floor wins; with thick seatbacks the seat wins.
Width — the narrowest point between the wheel arches
- Open the boot.
- At your elevation level, find the narrowest gap between the left and right wheel arches.
- Measure straight across it.
Why the narrowest point? The opening is almost always wider than the space between the arches. A rectangle has to pass the tightest point — measuring the opening flatters your car and misleads you.
Closed depth — at the edges, not the middle
- Close the tailgate.
- At your elevation level, measure from the seatback to the closed tailgate.
- Take it near the left and right edges of the width from step 2 — not down the centreline.
- If the two differ, use the smaller one.
Why at the edges? A boot is deeper in the middle than at the sides, because the tailgate curves away from you. A rectangular platform can't use that extra middle depth — its corners have to fit too. Measure down the centre and you'll get a number several centimetres too generous, and end up with a platform that stops the door closing.
Check your numbers
Type them in. You'll get an answer straight away — and either way, send them to us. A few centimetres short is usually something we can work with.
Adjustable legs are the reason we ask for elevation rather than guessing it. Folded rear seats slope, and a bed that follows the slope leaves you sleeping downhill. Set to your number, LEVEL sits level instead.
We'd rather say no than sell you the wrong thing. But short by a couple of centimetres is rarely the end of it — we build to the vehicle, and small adjustments are normal. Send the numbers and a photo of the open boot with the seats folded, and we'll tell you what's possible.
Not sure a platform is the right call yet? Tent, roof tent, mattress or platform — all five compared.