Cargo boxes are one way to increase cargo space in your car. Whether you're commuting daily, camping on weekends, or traveling with family, a roof cargo box is a practical solution for expanding your vehicle's interior space.

However, cargo boxes come in a wide variety of sizes and types. How do you determine which one is right for your vehicle? This BIUWILD rooftop fitting guide will provide you with multi-faceted guidance, answering common questions and showing you how to choose the best roof box size for your vehicle.

Find the right rooftop for your lifestyle

When choosing the best roof cargo box, first define your intended use. You might only need it for everyday storage, or it might be specifically for storing sports equipment like skis , or you might want to accommodate multiple purposes.

Ski gear rooftop:

Most BIUWILD roof cargo box can accommodate snowboards or skis, but pay attention to the maximum length.

The cargo boxes are made of weatherproof material, resisting low temperatures and snowmelt, and are equipped with safety locks to ensure the stability of your gear during transport, making them ideal for winter sports.

The BIUWILD Axis 500L Extra Long ski case features a low-profile design specifically built for storing skis, accommodating skis up to 200cm in length. Its aerodynamic design makes it the ideal choice for winter ski luggage and one of the best roof boxes for skis.

BIUWILD Axis 500L Extra Long Cargo Box

Rooftop Storage for Travel:

If you're planning a long trip, when choosing a car luggage box, we recommend prioritizing models with a higher roof and larger capacity. This design not only easily accommodates larger suitcases but also allows for the storage of travel gear such as tents, barbecue equipment, and camping chairs. Compared to the limited space in the trunk, largest roof cargo box options offer more flexible storage for family vacations or group trips.

Rooftop Storage for Everyday Expansion:

For urban commuting and daily life, small vehicles often have limited space, making roof top carriers for SUVs and compact cars a popular choice. Small to medium capacity rooftop storage boxes not only meet the daily storage needs for shopping, sports equipment, strollers, etc., but also offer convenient disassembly and folding.

Comparison of Different Roof Boxes

BIUWILD Flex, BIUWILD Axis, and BIUWILD Trek are three series of BIUWILD roof boxes. What are the differences between them?

Similarities:

• BIUWILD roof boxes feature a dual-side opening design for easy access.
• Aerodynamic design with a streamlined shape reduces wind resistance and noise, ensuring a smoother driving experience.
• The shell is made of PMMA+ABS, providing robust structural strength and impact resistance.
• Suitable for all seasons, designed for year-round activity.

BIUWILD Flex - Small Capacity Roof Box (250L–390L)

These roof boxes are lightweight and flexible, especially suitable for urban space expansion and small car owners.

They provide extra space for everyday items such as shopping bags, strollers, and sports equipment, while being very easy to disassemble and pack.

BIUWILD Axis - Medium-Capacity Rooftop Box (420L–570L)

These rooftop boxes balance capacity with vehicle compatibility, making them ideal for families and outdoor enthusiasts.

They can accommodate tents, skis, suitcases, and other gear, meeting the needs of weekend getaways or short trips. The streamlined design reduces wind resistance and noise, and the dual-side opening makes loading and unloading items easier.

For those who enjoy camping, skiing, or fishing, the Axis offers a reliable storage solution and is often considered among the best roof cargo boxes.

BIUWILD Trek - Large-Capacity Rooftop Box (600L–850L)

Designed for large vehicles such as SUVs and MPVs, the Trek offers ample space to accommodate more equipment, bicycle accessories, and large luggage. Its higher roof design makes it excellent for long journeys and group trips.

Especially during the winter ski season, the Trek can easily accommodate multiple skis, snowboards, and a full set of ski equipment.

Its robust materials and safety locks ensure stability during travel, making it the perfect partner for outdoor adventures and snow sports, and one of the largest roof cargo box options available.

Fuel Consumption Performance of the Three Product Series

Adding a roof box usually increases fuel consumption due to increased air resistance. Test data shows that average fuel consumption can increase by 15%–25%, and the larger the capacity and the taller the box, the more significant the impact.

The BIUWILD roof box features a streamlined design, taking aerodynamic performance into full consideration. Even with the large-capacity Trek series roof box installed, it maintains a smooth and comfortable journey.

Can Roof Boxes Be Used on Electric Vehicles?

Most electric vehicles, like gasoline vehicles, have roof structures that support the installation of roof boxes or roof racks.

Some electric vehicles have lower roof load-bearing capacity. it is necessary to check the maximum load-bearing capacity in the vehicle's manual before installing a rooftop cargo carrier.