Packtipps für die Dachbox: Warum eine Heckbox mehr Platz bietet

Every road trip starts the same way: Gear scattered across the driveway, and a growing suspicion that not everything will fit. Packing a roof box well isn't about forcing more in — it's a sequence problem. If the order and structure are right, the available space goes twice as far.

Before you pack: Format matters as much as technique

This is the part most packing guides omit. A classic roof box reaches its limits at about 300–450 liters, and every liter above the roofline fights wind resistance, height restrictions, and driving dynamics with a load. A rear-mounted cargo box like IXTAbox solves all three problems: comparable or larger volume at bumper height, no lifting gear overhead, and no aerodynamic disadvantage at cruising speed. If you're still undecided, our buying guide: Why a tow bar cargo box beats any roof box is worth a read.

Start with weight, not volume

The instinct is to pack by size – largest items first. This is wrong. Heavy items belong low and centered; everything on top should be light. An improperly distributed load changes handling in crosswinds, and a rear-mounted design keeps this weight inherently low, rather than requiring you to compensate.

Layer, don't stack

Loose stacking is why storage boxes always seem smaller than they are — gaps form between irregularly shaped items, and space is lost. A flat base layer (sleeping bags, folded tents), then solid items (cooler, crates), and finally soft, compressible gear on top uses the entire volume instead of just the middle third. This is exactly what lies behind more freedom and safety for your family adventures in general, not just within a box.

Build in structure

This is where most packing systems fail: Without dividers, a shifted item slides into everything next to it until the next highway exit. A partitioning wall system that creates compartments in a 5 cm grid keeps categories separate — skis in one zone, cookware in another — while securing rails and quick-release straps anchor the heaviest items to the bottom, rather than letting them float freely.

Set up once, use every trip

Those building a storage system from scratch will find a mat, rails, and straps bundled in a complete accessory kit. Check out our post on seasonal travel made easy with the tow bar cargo box before your next trip.