Can a Roof Box Overhang? Reasons and Solutions (2023)

Yes, a roof box can overhang the edges of a vehicle’s roof. However, it’s important to ensure that the overhang doesn’t obstruct visibility, exceed weight limits, or create safety hazards during travel.

Can a Roof Box Overhang?

It’s undeniable that roof cargo boxes are a super essential product for a vehicle. The main reason is that it can immensely help during a trip. Besides, it can take a lot of stuff and make more space in the car. If you are a frequent traveler or like to arrange camping trips, a roof cargo box is indispensable. But why a roof cargo overhang?

This is complaining about this product. The criticism has emerged more in recent times. But is it true? Yes! Nevertheless, a small amount of overhang is not alarming though. It’s vital to deliver proper storage space in it. Nonetheless, too much hanging is a negative sign.

Now, we’ll discuss a roof cargo box overhang. How to avoid such a scenario? Let’s go –

Can a Roof Box Overhang? Reasons and Solutions

Of course, a bit of overhang might happen, and it’s not a severe issue. But it doesn’t mean the cargo box can hanging too far off the backspace of the vehicle. You won’t be comfortable with such a scenario, will you? When packing the roof box, remember that it shouldn’t go out too far.

On the other side, you can take some preventive measures. Let’s check –

  • Before purchasing, check out the size. Ensure that it isn’t too big or small in terms of size.
  • Closely check whether it is overhanging or not. If a little bit of hanging is happening, it’s all right.
  • The last concern is that you must securely mount the box to the roof.

Now, check out some crucial matters on roof box overhanging. Take a look –

A Little Overhang is OK

Tell us honestly – is the question “can a roof cargo box overhang” makes your head twisted?! Ow! Don’t worry! It’s not a matter of overthinking! Get relaxed! People who drive the car with a roof box regularly know that a bit of overhang is inevitable. It’s a pretty much usual matter.

Notwithstanding, too much overhang is not a good thing. It can create drag and negatively impact the vehicle’s overall fuel capability. Further, it can develop issues on the stability of the car. A bit of an overhanging issue won’t bother you at all.

You must ensure that the box is correctly secured on the rooftop before entering the highway. The reason is you won’t definitely expect that the cargo roof box will be flying off the road when you’re driving the car at super speed!

All you need to do is act wisely to enjoy the advantages of safely roof-mounted storage.

Rear Overhang Must be Avoided

The front overhang is ok. But, the overhang situation on the rear side can cause problems. Even a bit of overhang in the backside is not a big deal. However, things could turn nasty if the overhang becomes too much. For this reason, car manufacturers always recommend that customers should fit cargo boxes on the front instead of the back.

On the other hand, it could also depend on the vehicle type. If you’re using a car with no rear hatch, you can expect a bit of overhang, and it’s no big deal. Nevertheless, you can take some steps to reduce the overhang situation significantly.

  • Before purchasing, buy a roof box that can perfectly fit your vehicle.
  • Check overhang in the neighborhood before hitting the highway road. Don’t take the car on the main street if it is too much.
  • Ensure that it is mounted well to the rooftop of the vehicle.

How to Reduce the Roof Box Overhang Situation?

Best Rooftop Cargo Carrier

Most people don’t like the overhang situations in their vehicles. But, are there any steps or measurements that can be effective against it? Yes! Here, we’ll discuss some solutions you can apply to deal with this problem. Let’s check –

Car Type

Do you think all cars possess a rooftop? No! If you believe in that way, you’re absolutely wrong. There are still so many car models that are not manufactured to hold a roof cargo box. So, you should think about it before making a final move.

Right-Sized Racks and Boxes

The right-sized roof box will indeed matter to you. If you want to have a flexible trip by car, you should buy a perfect-sized roof box. Moreover, buy the box according to the size of your roof rack. If the rack is small and you purchase a larger box, it will increase the possibility of an accident.

Therefore, you must keep things within the limit when selecting a box. Further, don’t buy a far larger roof box than your vehicle. It will ultimately be suicidal. Hence, purchase the box according to the size of the car. Otherwise, you will surely regret it.


Do you want to reduce the drag to a minimal range? If yes, then you can reposition the cargo box. Consider not to place it too far back. Otherwise, the rear hatch can fall into a deep trouble. This is how you’ll get a fair chance to decrease the overhang on the front or backside of the vehicle.


This is another crucial thing for a roof cargo box. If your box isn’t stable enough, it can fall off during driving. So, there’s no point in ignoring it to avoid a colossal fiasco. Consequently, the right-sized box generally provides stability. But, if you buy a wider box, it could raise a problematic situation.

Nevertheless, you can purchase a widespread bar to bring stability. This is how everything will place in order. Before beginning the journey, you can run a test on whether the box is stable or not.

Can a Roof Box Overhang? – FAQs

How much weight can a roof box carry?

Roof boxes have limitations. Different sizes can carry different types of weights. Notwithstanding, the usual limit is between 50 to 80 kg.

Can I keep the bigger box in the small-sized car?

You can. But, it will create problems. For this reason, you can use a widespread bar. Avoiding purchasing a bigger box for a small-sized car will be the best task.


If you want a superb travel experience, you’ll need a roof cargo box. Can a roof cargo box overhang? Of course, it is! All you need to do is some intelligent task to avoid it. Buy a right-sized box and implement other factors we’ve discussed above. This is how you can make your journey more convenient.

Happy traveling!

Best Seller List of Rooftop Cargo Boxes:

SaleBestseller No. 1
SportRack Vista XL Rear Opening Cargo Box,Black
  • 18 cubic foot (510 L) internal cargo capacity
  • Made from durable UV-resistant ABS material
  • Rear opening for easy access away from traffic
  • Tool-free mounting hardware for easy installation and removal
  • Includes key and lock to secure contents in the box, and the box to your rack
  • Fits SportRack Rack Systems, square bars, round bars and most factory racks (check fit guide)
  • Dimensions (LxWxH): 63 x 38 x 19 in / 160 x 96.5 x 48 cm
  • Min-Max Crossbars Spacing: 23 5/8 - 29 3/4 in (60 - 75.5 cm)
  • Max Weight Capacity: 100 pounds (45 kg)
Bestseller No. 2
Thule 614 Pulse Rack, Medium, Black
  • Functional rooftop cargo box provides 14 cubic feet of additional packing space
  • Rugged and durable design keep contents protected
  • FastGrip quick-mount system assembles in minutes
  • Passenger-side opening for easy loading and unloading
  • Central Locking system provides maximum safety
  • Thule Comfort Key can only be removed when all locking points are securely closed
  • Fits 3-5 snowboards (max length: 155 cm)
  • External dimensions: 67 x 35 x 16 inches; Internal dimensions: 61 x 33 x 14 inches
  • Load capacity: 110 lbs; Product weight: 34 lbs
  • Height off crossbar: 16 inches. Fast and secure mounting
Bestseller No. 3
JEGS Rooftop Cargo Carrier for Car Storage - Large Roof Rack Cargo Carrier - Heavy Duty Weatherproof...
  • Secure & protect your gear in this 18 cubic ft. HDPE plastic hard shell vehicle cargo carrier; high-capacity interior dimensions 57 L x 38 1/2 W x 17 3/4 H inches; aerodynamic design for fuel efficiency
  • Weatherproof storage for your luggage with a four corner locking system, front latch, and weather-tight seal for ultimate car rooftop protection and security
  • Easy & convenient loading and unloading from either side of the car make for smooth travel and hassle-free storage
  • No tools required, easy assembly and installation. All mounting hardware and simple instructions are included to get you safely on the road quickly
  • Made in USA, limited lifetime guarantee. The JEGS car top carrier’s high-quality construction and performance give you peace of mind
  • Holds 3 golf bags
Bestseller No. 4
433 Reviews
Auto Dynasty Heavy Duty Hard Shell Roof Top Mount Car Storage Travel Luggage Box Cargo Carrier with...
  • ▶️ This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
  • ▶️ The package comes with [1] 53 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
  • ▶️ It is constructed of rugged, impact-resistant ABS material to ensure a long lasting life in outdoor conditions. More, it can open from the side and stay open till you close it with the strong support arm.
  • ▶️ Opens on the passenger side to 14 inches wide to store bulky items from the side and stays open till you close it, and it is very easy to install without any tool required to assembly.
  • ▶️ Overall Dimensions: 53" L x 34" W x 15" H | Capacity: 11 Cubic Feet and up to 110 LBS
Bestseller No. 5
Thule Force XT Rooftop Cargo Box, Sport
  • A versatile roof-mounted cargo box for everyday use
  • Narrow design leaves space for other gear such as bikes, kayaks, skis, and more while providing 11 cubic feet of additional packing space
  • Designed to fit a wide range of vehicles; works with most factory and aftermarket roof racks
  • Quick and tool-free PowerClick mounting system "clicks" when roof box is secure and properly mounted - takes less than 5 minutes to install
  • Dual-side opening for easy access to all areas of the box, from either side of the vehicle
  • Full trunk access with no roof box contact
  • Fits 3-5 pairs of skis / 3-4 snowboards (up to 175 cm)
  • External dimensions: 74.75 x 24.75 x 16.75 inches
  • Internal dimensions: 70.5 x 20.5 x 14.75 inches
  • Load capacity: 165 lbs; Product Weight: 32 lbs
SaleBestseller No. 6
363 Reviews
SportRack Horizon Cargo Box (Alpine, 11 Cubic Feet)
  • 11 cubic foot (311 L) cargo capacity
  • Made from rugged, impact resistant ABS material
  • Narrow and long profile is ideal for skis/snowboards and leaves room on your roof rack to mount other accessories
  • Passenger side opening for easy loading and unloading away from traffic
  • Easy to install or remove using the quick release attachment kit
  • Holds 3-6 pairs of skis (up to 210 cm) or 2-3 snowboards
  • Fits SportRack Rack Systems, square bars, round bars and most factory racks
  • Dimensions: 88.75″ x 21″ x 15.75″ / 225.5 cm x 53 cm x 40 cm
  • Max load capacity: 110 lbs (50 kg)
Bestseller No. 7
Hard Shell Roof Carbon Cargo Carrier with Car Trunk Organizer Security Keys,Waterproof Rooftop...
  • 🚙The roof box is manufactured from sturdy ABS and PMMA material for long-lasting use, able to protect your valuables from exposure to the elements and can load 130 lbs capacity, suitable for round, square and most aerodynamic bars.
  • 🚙The roof box is manufactured from sturdy ABS and PMMA material for long-lasting use, able to protect your valuables from exposure to the elements and can load 130 lbs capacity, suitable for round, square and most aerodynamic bars.
  • 🚙Key can only be removed when all locking points are securely closed . Opens on the passenger side to 14 inches wide to store bulky items from the side and stays open till you close it, and it is very easy to install without any tool required to assembly.
  • 🚙Double side opening for easy loading and unloading .Overall Dimensions: 56.3" L x 30.31" W x 13.78" H | Capacity: 12 Cubic Feet and Up to 130 LBS | ABS Plastic Mounting Brackets
  • 🚙Perfect for Road Trip--Take the cargo box to the park, the beach, the sports field, or any place you need to store. Sleek aerodynamic design to reduce drag and has less noise.
Bestseller No. 8
TUFFIOM 11.65 cu.ft. Rooftop Cargo Box w/Keys, Hard Shell Dual-Side Opening Waterproof Roof Mount...
  • DUAL-SIDE OPENING FOR EASY ACCESS: Dual-side opening design allows you to open it from either the driver side or the passenger side, which brings more convenience for loading and unloading. (NOTE: There is protective film on the lid. Please peel off the film before use.)
  • FAIR CAPACITY: With 11.65 cubic feet maximum storage capacity and 150lbs loading capacity, the roof cargo carrier can allow for more space in your car. What’s more, its streamlined design will reduce drag and noise during driving.
  • LOCKING SYSTEM FOR SAFETY: It is designed with locks on both sides and comes with keys for protecting your valuables. And the stiffeners at the bottom of the roof cargo box strengthen its stability.
  • EASY TO INSTALL: It is simple in structure and light in weight (approximately 31.3lbs). It won’t be difficult for you to lift it and install it to your car. And it can work with most vehicles with crossbars, such as car, suv, van, etc. Applicable Cross Bar: Max. Width 2.36”. Max. distance between bottom holes for installation: 25.59”. Min. distance between bottom holes for installation: 18.5”.
  • QUALITY MATERIAL FOR DURABILITY & BETTER PROTECTION: Made from ABS material for long-lasting use. And it can protect your luggage or equipment from being exposed to sun, rain or dust. And it is protected with 3-Year Warranty.
SaleBestseller No. 9
Car Rooftop Cargo Carrier Bag, 21 Cubic Feet 100% Waterproof Heavy Duty 840D Car Roof Bag for All...
  • 【840D CHAMPION QUALITY MATERIAL】 Made with heavy-duty 840D abrasion-resistant PVC fabric, this ultra-durable car roof cargo carrier stands up to any rough treatment or harsh weather. Better still, the triple-reinforced welded seams make it hard to tear or rip for years to come.
  • 【MORE THAN WATERPROOF】 Featuring waterproof zipper wrapped with 6 inches widened velcro zipper flaps, our vehicle cargo carriers will exceed your expectations with the waterproof effet. The reinforced seams will make it possible "zero leakage" even in downpours.
  • 【EASY INSTALLATION】 Our roof rack cargo carrier comes with an anti-slip mat and 8 thickened adjustable straps that will keep the cargo bag in place. The smooth zipper, adjustable straps, door hooks and robust buckles allows you to effortlessly secure it to any car.
  • 【SECURE FIT & LARGE CAPACITY】 Our 21 cubic feet rooftop cargo bag is compatible with vehicles with our without roof rack, the large capacity can keep the shape nicely, even when holding many luggage cases, blanket, tents, sleeping bags and more.
  • 【PACKAGE LIST】You will receive 1x roof top carrier bag, 1x storage bag, 1x anti-slip mat, 6x door hooks, 2x extra luggage straps, 1x luggage lock.
Bestseller No. 10
41 Reviews
Perflex Exclusive Rooftop Cargo Box Carrier Large 17.7 Cubic Feet Car Top Mount Travel Luggage...
  • SPACIOUS, STYLISH, AND AERODYNAMIC: Linings blends in seamlessly with your vehicle. 17.7 Cu Ft (500 L) of cargo capacity provides ideal storage for skis, snowboards, boots, helmets, duffel bags, and still leaves room for your other gear. Supports up to 130 lbs (60 kg) weight capacity.
  • SECURE AND WATER-RESISTANT: Central locking system ensures that the key cannot be removed until the box is locked. Weather-resistant & water-resistant. Comes with 4 (four) keys and straps.
  • TOOL-FREE INSTALLATION AND UNIVERSAL FITMENT: Comes fully assembled and ready to mount on your vehicle. Tool-free mounting hardware for easy installation and removal. Fits vehicles with roof racks/crossbars (Roof racks are not included).
  • DUAL-SIDE OPENING AND CLOSING: Convenient loading and unloading of your gear from both sides of the cargo box. Dual side opening also helps with easy mounting and demounting the carrier from your vehicle.
  • HIGH-QUALITY CONSTRUCTION: Made from heavy-duty, UV-resistant, and impact-resistant ABS material. Lightweight, sturdy and durable. Made in Turkey, Assembled in the U.S.A.

Last Update : 2024-02-26

Automotive products are like an addiction to me. Years ago, I started my job at a Roof Box installation co. Then I realized that I have a passion for cars. It is a perfect scope to share my different experiences about automotive products.

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