Roof boxes can potentially damage your car if not installed properly or if they exceed the recommended weight limit, causing strain on the roof. Regular checks, proper installation, and adhering to weight limits can help prevent such damage.
This question circled in many car owners’ minds – do roof boxes damage the car? Shortly, yes! It can severely damage your car if you fail to install it correctly. Therefore, a severe accident might occur. The possibility of such an incident increases if you carry heavy items on the product. Heavy items on the box, and you’re driving the car at the highest speed on a rainy day!
It’s a potential scenario for an accident! Sad but true! Before taking things on a box, ensure that it is highly secured and mounted correctly on the vehicle’s rooftop. Otherwise, things could go wrong and ultimately cost you a lot of money.
Do Roof Boxes Damage Your Car?
It’s a big question, and people seek a proper answer to it. The answer is yes. A roof box can badly damage a car if it isn’t installed firmly. A powerful twisting force might join between the roof box and its nut bolts. As a result, the car can lose its stability and standard power. This could result in a severe accident when you’re on a road journey.
Everyone will surely want to avoid such a scenario. For this reason, it is essential to install the roof box perfectly. So, you don’t have to deal with the roof box. This is how you can avoid any serious injury.
You can check this article, “How to install a roof box in a car” to learn the procedure of installing a roof box in your car.
Steps to Take While Using a Roof Box
Yes, your car contains a roof box placed at the top of the roof. But does that mean you will install it and go?! Nope! You need to do some extra job. Otherwise, the lifespan of the roof box will get shorter. Let’s take the steps –
Read the Setting Manual
When you buy a new product, especially an expensive thing like a roof box, you must check the manual given by the manufacturing company. Thus, you need to do the task according to their guidelines. This is how you can ensure the path of safety and security.
You could face a challenge when installing the roof box for the first time. As a result, there’s a chance things could go wrong. But, you can escape any contravention effortlessly.
Take the Professional’s Help
You could face a challenge when it is the first time in the installation process. Therefore, a wrong move can happen. To avoid it, you should take help from a professional. This is how you can avoid any big mistake.
Lubricate on a Regular Basis
It’s easy to surmise that the product can get worn out. Since the box stays on the rooftop, it has to fight against adverse weather conditions like rain, snow, etc. That’s the reason the corrosion on the box might happen. Due to this, it can lose its supremacy and begin to wear down fast.
For this reason, you should use lubricant regularly to prevent it from being worn out. Moreover, this is how you can protect this expensive product from corrosion and rust.
Remove the Box Until You Need it
There’s no need to put the box on the car’s rooftop when you’re not using it. The reason is it could badly affect the exhaustion of the fuel. Yes, the roof box is made of lightweight elements and manufacturing companies always try to use soft materials during the production; the roof box still can significantly impact fuel spending.
For this reason, you should remove it. Further, removing it without necessity keeps the vehicle’s roof top steady. In addition, it also assists in decreasing the noise of the wind.
Check out the Weight
This is a highly crucial matter. Before putting your personal belongings in the roof box, you have to check the manual to discover the weight limit of the product. Afterward, put all the things according to the weight limit. Don’t overload the roof box. Otherwise, things could go wrong.
If you don’t check the weight limit, your car and other people’s cars will be in danger. The reason is that the box and its belongings can fall off in extremely windy weather while driving the vehicle. Therefore, don’t neglect it and check out the weight carefully.
Don’t Overspeed the Vehicle
Yes, you must drive the car with the roof box on the top. But, don’t cross the speed limit while you’re in motion. Always maintain the required speed limit. Hence, if you cross the limit, both you and other people could face danger. For instance, you’re driving your car at the highest speed.
Suddenly you need to turn the car. What would happen? You have to turn the steering wheel so fast. As a result, the roof box can fall into the road. After that, your car and other peoples’ cars could be damaged badly. Even the possibility of an accident can’t be ruled out. So, be careful and stay safe!
Do Roof Boxes Damage Your Car? FAQs
Why do I need a roof box?
If you’re a frequent traveler and regularly go outdoors, you need a roof box. Sometimes, your car’s trunk might not contain enough space? What then? You need a box to carry the extra belongings. It saves the space within the car’s trunk and makes the journey more comfortable.
What types of damage can a roof box do to a car?
If you fail to install the box correctly in the vehicle, there’s a big chance that the roof box can cause severe damage to your car. For instance, it can scratch the color of the rooftop. Further, heavyweight products can wear and tear the paintwork of the car. Sometimes, overloading and wrong installing can turn into an accident.
Can a roof box impact on a car’s MPG?
Of course, it can. If you add more weight to it, the aerodynamics of the box can’t do the job correctly. As a result, the drag increases steadily, resulting in more gas mileage.
Does the box spend more fuel?
Yes, it is. The box carries more weight. For this reason, the final weight of the vehicle also increases. Therefore, the amount of fuel also inflates.
Final Say
So, we’re at the end of our discussion. We hope you’ve got enough knowledge on how the roof boxes damage the car? You need to be careful about that. This is the only way you could eliminate the chances of damaging the car. Install it correctly and follow the other guidelines provided by us.
Now, do you have any questions regarding our article? You can question it in the box below.
Best Seller List of Roof Cargo Boxes:
- 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)
- Road Trip Ready: This heavy-duty hard shell roof top cargo carrier is your ideal travel companion, perfect for hauling gear to parks, beaches, and sports fields. Its sleek aerodynamic design reduces wind drag and noise while fitting all SUV, truck, and van with roof racks. With 17.7 cu ft capacity, it's ideal for camping trips and family vacations
- Built to Last: Built with rugged ABS plastic and UV-resistant black coating, our waterproof rooftop cargo box withstands harsh weather while protecting your belongings. The 165 lb weight capacity handles bulky items with ease, compatible with round, square, and factory roof bars for all-purpose fit
- Maximize Cargo without Crowding Passengers: Expand your vehicle's capacity with this 70"L x 31"W x 15"H hard-shell roof top mount car storage solution. It securely carries luggage, sports equipment, and outdoor gear without compromising passenger comfort - perfect for road warriors and adventure seekers
- Dual-Sided Access & Lockable Security: Keep valuables safe with the included security keys on this rooftop cargo carrier. The dual-sided opening allows easy loading from either side of your vehicle, while the reinforced hard-shell design prevents theft and weather damage
- Easy Install, No Tools Needed: Mount this roof cargo box in minutes with the tool-free installation system - no mechanic needed! Includes all hardware and clear instructions for hassle-free setup on your SUV, truck, or van. Get ready for adventure faster
- 【DURABLE CONSTRUCTION】Crafted from high-quality ABS material, the hard shell rooftop cargo box ensures long-lasting durability. Its waterproof and UV-resistant design protects luggage from various weather conditions, making it ideal for road trips. The aerodynamic shape also reduces fuel consumption and noise for a smoother ride
- 【SPACIOUS 12 CUBIC FEET STORAGE】With dimensions of 54.3"L x 31.5"W x 13.4"H/62.2"L x 31.5"W x 13.4"H, the rooftop cargo box offers 12 cubic feet (340L) of extra storage space. With a maximum capacity of 165 lbs, it significantly increases storage capacity for your belongings
- 【UNIVERSAL FIT】Compatible with all vehicles equipped with a roof rack, including cars, vans, and SUVs. Prior to purchase, please verify compatibility by checking the roof rack fitting guidelines
- 【CONVENIENT DUAL-SIDED OPENING】The dual-sided opening system allows easy access from both sides of the cargo box. Includes 2 keys and 2 straps for added security. Ensure one side is locked when opening the other side
- 【RELIABLE WARRANTY】 is committed to delivering high-quality products and meeting customer expectations. Enjoy a one-year warranty for added peace of mind. For any inquiries, our team is available to assist you within 24 hours
- Rugged & Weatherproof Construction：Our rooftop cargo carrier built from premium ABS material, this hard shell rooftop cargo box is waterproof and UV-resistant. It shields your luggage from rain, snow, and sun, while the aerodynamic design minimizes wind noise and reduces fuel consumption—a perfect companion for any road trip.
- Spacious 12 Cubic Feet of Storage:Offering a generous 12 cubic feet (340L) of extra storage, this cargo box measures 54.3"L x 31.5"W x 13.4"H and supports up to 165 lbs. Easily expand your vehicle’s cargo capacity for camping, vacations, and everyday travel.
- Universal Roof Rack Compatibility:Compatible with all vehicles equipped with a roof rack, including cars,vans, and SUVs. Please check your vehicle’s roof rack specifications before purchasing to ensure a proper fit.
- Easy Dual-Sided Access & Security:Features a convenient dual-sided opening for quick loading and unloading from either side of your vehicle. Includes 2 secure locks and 2 straps to keep your gear protected. Remember to keep one side locked while accessing the other for added safety.
- Easy Assembly: Enjoy a quick and hassle-free setup! Our rooftop cargo box comes complete with all necessary components and clear instructions
- 【Overall Dimensions】70'' L x 31'' W x 15'' H , Capacity: 17.7 Cubic Feet volume and holds up to 165 lbs;
- 【Durable & Weatherproof Protection】Crafted from impact-resistant ABS material, this rooftop cargo box withstands harsh UV rays, rain, snow, and road debris while maintaining a sleek, glossy finish. Designed to hold 165 lbs of gear, its rugged shell defends luggage, sports equipment, or camping essentials from the elements, ensuring your belongings stay dry and intact mile after mile;
- 【Double-Side Opening for Hassle-Free Access】Uniquely designed to open from both sides, allowing easy loading of bulky items like skis, suitcases, or coolers. The self-supporting gas struts keep the lid securely open while you organize, and the key-lock system ensures it stays closed until you’re ready to unlock;
- 【Aerodynamic Design for Quiet, Fuel-Efficient Travel】Engineered with a wind-cheating profile, this cargo box minimizes noise at highway speeds. The smooth contours eliminate whistling sounds, delivering a quieter, smoother ride compared to bulky competitors;
- 【Secure Travel with Anti-Theft Locking System】Two security keys lock all securing points simultaneously (keys removable only when fully closed), deterring theft during stops. Reinforced straps and a robust frame keep the box anchored, even on rough terrain. Perfect for road trips, ski weekends, or family vacations—travel smarter, not harder!
- 【Tool-Free Installation & Universal Compatibility】Fits round, square, and most aerodynamic roof racks with no tools required—simply clamp it onto your vehicle’s crossbars using the pre-assembled mounts. It offers 17.7 cubic feet of storage, ideal for a wide variety of vehicles, including cars and SUVs. Always check your roof rack specs for compatibility.
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 11 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 14-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 53" L x 34" W x 15" H | Capacity: 11 Cubic Feet and up to 110 LBS. Package includes [1] 53 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 12.7 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 13.5-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 55" L x 34.5" W x 14" H | Capacity: 12.7 Cubic Feet and up to 110 LBS. Package includes [1] 55 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- 【DURABLE CONSTRUCTION】Crafted from high-quality ABS material, the hard shell rooftop cargo box ensures long-lasting durability. Its waterproof and UV-resistant design protects luggage from various weather conditions, making it ideal for road trips. The aerodynamic shape also reduces fuel consumption and noise for a smoother ride
- 【SPACIOUS 12/14 CUBIC FEET STORAGE】With dimensions of 54.3"L x 31.5"W x 13.4"H/62.2"L x 31.5"W x 13.4"H, the rooftop cargo box offers 12 cubic feet (340L) of extra storage space. With a maximum capacity of 165 lbs, it significantly increases storage capacity for your belongings
- 【UNIVERSAL FIT】Compatible with all vehicles equipped with a roof rack, including cars, vans, and SUVs. Prior to purchase, please verify compatibility by checking the roof rack fitting guidelines
- 【CONVENIENT DUAL-SIDED OPENING】The dual-sided opening system allows easy access from both sides of the cargo box. Includes 2 keys and 2 straps for added security. Ensure one side is locked when opening the other side
- 【RELIABLE WARRANTY】 is committed to delivering high-quality products and meeting customer expectations. Enjoy a one-year warranty for added peace of mind. For any inquiries, our team is available to assist you within 24 hours
- Road Trip Ready: This heavy-duty hard shell roof top cargo carrier is your ideal travel companion, perfect for hauling gear to parks, beaches, and sports fields. Its sleek aerodynamic design reduces wind drag and noise while fitting all SUV, truck, and van with roof racks. With 17 cu ft capacity, it's ideal for camping trips and family vacations
- Built to Last: Built with rugged ABS plastic and UV-resistant black coating, our waterproof rooftop cargo box withstands harsh weather while protecting your belongings. The 165 lb weight capacity handles bulky items with ease, compatible with round, square, and factory roof bars for all-purpose fit
- Maximize Cargo without Crowding Passengers: Expand your vehicle's capacity with this 69"L x 33"W x 11"H hard-shell roof top mount car storage solution. It securely carries luggage, sports equipment, and outdoor gear without compromising passenger comfort - perfect for road warriors and adventure seekers
- Dual-Sided Access & Lockable Security: Keep valuables safe with the included security keys on this rooftop cargo carrier. The dual-sided opening allows easy loading from either side of your vehicle, while the reinforced hard-shell design prevents theft and weather damage
- Easy Install, No Tools Needed: Mount this roof cargo box in minutes with the tool-free installation system - no mechanic needed! Includes all hardware and clear instructions for hassle-free setup on your SUV, truck, or van. Get ready for adventure faster
- Rugged & Weatherproof Construction：Our rooftop cargo carrier built from premium ABS material, this hard shell rooftop cargo box is waterproof and UV-resistant. It shields your luggage from rain, snow, and sun, while the aerodynamic design minimizes wind noise and reduces fuel consumption—a perfect companion for any road trip.
- Spacious 14 Cubic Feet of Storage:Offering a generous 14 cubic feet (390L) of extra storage, this cargo box measures 62.2"L x 31.5"W x 13.4"H and supports up to 165 lbs. Easily expand your vehicle’s cargo capacity for camping, vacations, and everyday travel.
- Universal Roof Rack Compatibility:Compatible with all vehicles equipped with a roof rack, including cars,vans, and SUVs. Please check your vehicle’s roof rack specifications before purchasing to ensure a proper fit.
- Easy Dual-Sided Access & Security:Features a convenient dual-sided opening for quick loading and unloading from either side of your vehicle. Includes 2 secure locks and 2 straps to keep your gear protected. Remember to keep one side locked while accessing the other for added safety.
- Easy Assembly: Enjoy a quick and hassle-free setup! Our rooftop cargo box comes complete with all necessary components and clear instructions
Last Update : 2026-03-17
