Roof box BMW 3 and 4 Series – Why a back box is the smarter choice 

The BMW 3 Series and 4 Series are known for their sporty performance, sleek design, and premium comfort. Many owners consider adding a roof box when they need extra space for road trips, golf weekends, or ski holidays. But while roof boxes are common, they often don’t match the driving dynamics and design of these models.

The drawbacks of roof boxes on BMW 3 and 4 Series

• Fuel efficiency: Roof boxes increase drag by up to 40%, which means higher fuel costs or reduced EV/hybrid range.

• Wind noise: These BMW models are designed for smooth, quiet driving – but a roof box generates turbulence that spoils the premium experience.

• Difficult access: Lifting skis, strollers, or heavy luggage onto the roof is inconvenient and unsafe, especially in winter conditions.

• Design compromise: A bulky plastic roof box disrupts the elegant, sporty lines of the 3 and 4 Series.

Why a back box is the better solution

A towbar mounted cargo box like IXTAbox gives you all the extra space you need without compromising efficiency or style.

• Generous capacity: Up to 390 liters of storage, perfect for skis, golf clubs, luggage, or camping gear.

• Aerodynamic advantage: Positioned behind the car, IXTAbox reduces drag by up to 5%, improving fuel economy and EV range.

• Quiet and stable: Less turbulence means a calmer ride and improved driving dynamics.

• Easy access: Mounted at waist height, making packing safe and convenient.

• Premium design: Crafted in Sweden from aluminum and stainless steel, IXTAbox complements the BMW’s luxury character.

The smarter storage upgrade for BMW drivers

For 3 and 4 Series owners, IXTAbox offers the perfect balance between practicality and performance. It’s a premium solution that matches the sleek design and driving feel of your BMW – while solving the limitations of a traditional roof box.

👉 Curious about the smarter alternative?
Discover IXTAbox – the premium back box for BMW 3 and 4 Series: www.ixtabox.com