If you want to go on a long trip, you might need to carry a lot of stuff. In that case, you will need a super-large cargo box for the roof of your car. Usually, the amount of provided storage space or the size of a cargo box is measured by the number of cubic feet they can hold. You can easily find a roof cargo box with nine to 20 cubic feet of storage space or more.
If you are in a hurry, then you can use the links below to buy the Largest Roof Cargo Box for your car. You don’t need to worry about the quality of the products because we only recommend the best.
– Overall Best – Thule Motion XT Rooftop Cargo Box
– Best Soft Cargo Carrier – RoofPax Car Roof Bag
– Highest Capacity – Wisamic Car Rooftop Carrier
There are mainly two types of cargo carriers are available on the market. One type is the soft-case type that is relatably easy to install, and the other type is the hard-shell case that usually comes with a sleek and aerodynamic design.
If you want the largest roof box on the market, then you should buy a roof box with a minimum of 18 cubic feet of storage space. Here you can find some of the biggest and best roof cargo carriers available on the market.
Largest Roof Cargo Box / Largest Cargo Carrier:
1. RoofPax Car Roof Bag
The RoofPax Car Rooftop Bag and Cargo Carrier comes with 19 cubic feet of storage space. It measures roughly 47″ x 35″ x 20″. It can easily hold up to six suitcases and more. If you want to go on a family trip with a big family, then you can choose this cargo carrier. You can get the RoofPax Car Rooftop Bag for around 140 dollars.
Most of the roof bags come with straps that go inside the car to tie it down. The RoofPax carrier comes with six door hooks that make the carrier more secure and safer.
This roof cargo bag is made out of military-grade materials. That’s why it is also compatible with extreme weather conditions. It comes complete with a protective mat and ten strong straps with strap restrainers so that you do not face flapping. The included zippers also come in very good quality. They are heavy-duty zippers so that you can use them easily for several years without any problem. More you can install this roof bag with or without a roof rack.
RoofPax’s number-one advantage is its super-large size. You will certainly never run out of storage room whatever you pack in it. All your items inside this cargo bag will remain safe and secured. You will be glad to know that it even comes with a lifetime manufacturer’s warranty on the zippers and buckles so that you can buy it without thinking much.
- ✅ SAFETY COMES FIRST: RoofPax is the ONLY brand that produces its Car Roof Carriers for maximum safety with the Patented 4+2 extra free door hook straps (included), instead of using straps that go inside the car. Tying down any car top luggage involving straps going through the inside of the car is HIGHLY dangerous as they interfere with air bags in case of emergency and are illegal to use in some states. RoofPax is the safest and most secure Car Roof Cargo Bag on the market today.
- ✅ DOUBLE ZIPPERS FOR EXTRA WEATHERPROOFING: This premium quality car top bag is made of military grade materials with TWO waterproof closing zippers, waterproof dual seam technology and water repellent double coating. This roof bag features include a built-in protective mat and 10 elastic Velcro strap restraints to prevent strap flapping. Security features also include a heavy duty SBS zipper, 10 sturdy straps with NIFCO buckles and double strap covers with 8 Velcro stripes.
- ✅ WORKS WITH or WITHOUT a ROOF RACK: Use the RoofPax spacious 19 cubic feet car roof top luggage carrier with any sized car or SUV. It can be quickly and easily installed in minutes using either; raised side rails/crossbars/roof rack/basket and if none of them is installed - you can always use the included 6 door hook straps which attach under the door's rubber seal gasket.
- ✅ EVERYTHING YOU NEED IS INCLUDED: Our set includes the 19 cft. rooftop cargo carrier, 6 patented door hook straps/clips, a TSA approved lock, and a sturdy storage bag, offering you a better and safer solution for safely storing your car top luggage when traveling.
- ✅ FREE EXTENDED WARRANTY: Our customers mean the world to us! We promise to be there for you whenever needed, that's why our cargo rack rooftop is backed by a lifetime warranty on zippers and buckles and a 5-year warranty on tears and fabric. Our 24/7 customer care is ready to address any issues you might have in no time!
2. Oanon Car The Carrier
The Oanon Waterproof Car Rooftop Carrier is a soft-top carrier that comes with a full 20 cubic feet of storage space. It is available in a thicker variety as well.
It is Larger than most other carriers. It measures 51″ x 40″ x 17″. so it is a perfect solution for storage space for family trips and long trips. It is made out of top PVC materials. The Oanon Waterproof Car Rooftop Carrier is always on the list of the largest roof box available.
The Oanon cartop carrier comes with a unique design. Though it is not water-resistant like other cargo carriers, it is fully waterproof, which makes it suitable for every weather condition. Your luggage and other stuff will always remain safe and dry and clean inside this cargo carrier whether you drive in the rain. It also comes with long straps, so you can easily install it on top of your car within a few minutes. So it is very easy to use.
This carrier is very easy to install, easy to use, and easy to keep clean. So this is one of our recommendations. You can get this awesome cargo carrier for around 70 dollars only which makes it is a very good deal. It comes with everything you need to use. It can provide you with a lot of conveniences. It will fulfill all your needs and what you expect from a roof cargo carrier.
- [ Soft Car Top Carrier ] - There Is No ”Best Soft Car Top Carrier”. Instead, The Best One Is The One That Satisfies Your Specific Needs.However, The Oanon Provides The Best All-Around Value and is Likely to Satisfy More Consumers. We Provides Larger Capacity ( 20 Cubic ), Top PVC Material, Convenient Design and More Security in a Fair Price
- [ 20 Cubic Feet - Carrying Capacity ] - The Whole Point Of The Purchase Is To Provide Additional Cargo Room, So It Makes No Point To Buy One That Is Not Big Enough. The Roof Bag Overall Size Is 51'' x 40'' x 17'', Carry 20 Cubic Feet. Larger Than Other Brand.
- [ Waterproof - PVC Materials ] - The Torrential Downpour Will Test Merely Water Resistant Materials To Their Limit And Likely Result In Damp Or Soaked Contents. But Oanon’s Car Top Carrier Is Coated With PVC To Aid In Waterproofing ( inside and out ),NOT ONLY WATER RESISTANT Like Other Brand.
- [ 6 Tough Straps - More Security ] - Alongside Carrying Capacity, Stability Is Arguably The Most Important Factor In a Car Top Carrier. Oanon Provide 4pc Wide Straps & 2pc 3M Straps. To Some Extent, The More Straps Used To Fasten The Carrier To The Roof The Better.
- [ Easy Mounting & Storage Design ] - Design With 4 Short Tie Straps & 2 Long Straps, Make It Easy To Attaches In Only a Matter Of Minutes. Oanon’s Carrier is Purely Malleable, More Simple To Store Than The Carrier With Stiff Inner-Lining ( Storage bag included )
3. Thule Motion XT XXL Cargo Box:
This stylish roof box is very easily usable and looks so aesthetic. It is available in 2 colors and a massive volume of 610L or 22 cubic feet. The dual-sided opening of this Thule Motion XT XXL can give you access more easily.
Despite being huge, it is very user-friendly and straightforward to open or close for its grip-friendly lid-lifter in unfavorable weather conditions. The weight limit for this roof box is 75kg.
Because of its immense size, you might be worried about access to your car’s trunk. But you don’t have to worry because it sits slightly ahead on the roof of your vehicle, so you can get full trunk access without hitting your roof box.
Some important features of Thule Motion XT XXL:
- Easy to open/close in all weather conditions.
- Grip-friendly outer handles and supporting lid-lifters.
- The load capacity of 75 kg.
- Oversized roof-mounted cargo box provides 22 cubic feet of additional packing space
- Designed for optimal space efficiency, aerodynamics, and vehicle fit
- Quick-mount system "clicks" when roof box is secure and properly mounted
- Dual-side opening for quick access from either side of the car
- Easy to open and close with grip-friendly handles and supporting lid-lifters
4. Thule Force Cargo Box:
This sleek roof box is another product from Thule. Despite looking great, the performance is good also. But we kept this at number 2 because of its mounting system.
To install it on the roof of your vehicle, you need to open the mounting tools first. Then you have to set the box in the center of the roof bars. The installation process is a little trickier, and you have to work correctly. Still, the installation process only took less than 5 minutes.
The Thule Force Cargo Box is available with a pre-installed quick-grip mounting system. So the installation process for this roof box is tool-free. The lid is very durable and functional with a diamond-textured finish. Its aerodynamic shape is conducive to reducing drag and resist air.
The Thule Force Cargo Box is available with a big SecureLock, which ensures the security of the box. Moreover, it is also available with a dual-sided opening. So you can get access to this roof box quickly.
Some important feature of Thule Force Cargo Box:
- Secure clicking mounting systems
- Exclusive diamond-textured AeroSkin surface
- Load capacity remains about 110 lbs.
- Diamond-Textured AeroSkin Lid is durable and the aerodynamic shape helps cut through the air
- Tool-Free Quick-Grip Mounting system attaches box to rack in less than 5 minutes
- Oversized SecureLock ensures the box is closed securely
- Dual-Side Opening for loading/unloading from either side of the vehicle
- Height off crossbar: 15.4 inches
5. STDY Rooftop Cargo Carrier
The STDY cartop carrier is one of the best largest roof boxes available on the market. It is fully waterproof. You will be able to carry your stuff for several years easily. It is made out of 1200-Denier polyester material that won’t rip, tear, or crack.
It comes with a sleek design. It is available in black and teal colors. It comes with up to 20 cubic feet of storage space. So you can carry whatever you want with it. Though it is a very durable carrier, it comes with double stitching for extra longevity. It is very easy to install also because of its enclosed tie-in straps.
It comes with all the things you will need to install this cargo carrier on top of your car. So you can easily take it out and install it as soon as you need it. More if you want to carry something oddly shaped, you have nothing to worry about because the soft shell can easily accommodate them.
Another very useful advantage of the STDY cartop carrier is its portability. You can easily fold it into a much smaller shape. It also comes with a carrying bag so that you can fold the carrier and store it easily when not in use. The best thing about this carrier is that it is compatible with most sedans, SUVs, and minivans, making it one of the most versatile carriers on this list.
- ☆【 WATERPROOF DESIGN】 Our durable rooftop cargo bag are treated with a pressing process by imported rubber strips and a stronger waterproof performance protection, constructed from 100% waterproof anti-rip, anti-peel, and anti-crack fabric with ultra-strong dual seam technology .
- ☆【UNIQUE DESIGN】 Two kinds of protective measures,the Cargo Bag made by the 1200-Denier Polyester Material after high-frequency pressing from refining into a dense and compact surface, coupled with invisible zipper well-designed magic.Allowing your trip experience more reliable anytime to anywhere even under the hard weather condition.
- ☆【INCREASES CAPACITY】Our Roof Bag Overall Size Is 51'' x 40'' x 17'', Carry 20 Cubic Feet, Larger Than Other Brand. That is very convenient for you to put luggage, sleeping bags and other travel needs of large items placed in the roof rack cargo bag. Easy to store ，it can be easily folded and placed in a storage bag for only a small space when not in use .
- ☆【EASY TO STALL】Firstly，the 6 built-in tie straps cross through the roof luggage rack,and hold the Nylon buckle. Secondly. Use the 6 extra straps through the plastic ring and then through rack, then hold on the buckle. Lastly. There are 2 long straps which can across the whole bag and the roof rack ensure that everything stays in place
- ☆【PRODUCT WARRANTY】You are very important to us, so if this cargo bag cannot fit your needs, just contact us and you'll be taken cared of by our excellent customer service
6. Wisamic Car Rooftop Carrier
The Wisamic Car Rooftop Carrier is the last option in this list. It is the largest roof box on this list. It comes with 30 cubic feet of storage space. You can purchase this rooftop carrier for around under 80 dollars what makes it a super awesome deal. So it is a great solution if you are looking for something on an affordable budget.
The Wisamic Car Rooftop Carrier measures almost 63″ x 43″ x 20″. It comes with included extra-large straps so that you can install it on top of an SUV or other large vehicles if you need it.
It also comes with a non-slip grip mat. So you do not have to worry about ruining or scratching up any paint on the roof of your car. The straps are triple-sewn that are very helpful in keeping the carrier in place as well as the items inside. It also comes with a storage bag so that you can store it easily when not in use.
The Wisamic cartop carrier is very easy to use. Any of your family members can easily take it out of the package and start using it immediately. It is made out of 500D PVC materials, and it is 100% waterproof and dust-proof. So all your stuff inside the box will always remain dry and clean whether you drive in any wet weather condition.
The Wisamic cartop carrier provides you with tons of extra storage space that you didn’t have before. Storage space is a must while you are planning for a trip so you can go for it.
- ✅ LARGE COMPACITY - The car roof bag overall size is 63''x43.3''x19.7''. Expand the carrying ability of your car for more 30 cubic feet. Provides extra space for storage on the way.
- ✅ WATERPROOF & DUSTPROOF - Made of 500D PVC to make it real waterproof. Double flap with velcro for double waterproof protection. Extra long flap helps protect zipper and resist water and dust.
- ✅ USER-FRIENDLY DESIGN - Non-slip grip mat enhances your travel by making sure that the bag does not move on your roof and adds padding so it WON’T scratch and ruin car paint; Thick, wide, triple sewn straps and clasps will hold your valuables steady as a rock and gripped in place throughout your road trip.
- ✅ EASY INSTALLATION & STORAGE - Straps attach to side rails or cross bars or basket. Just a matter of minutes. Soft and foldable. The rooftop cargo carrier also comes with the storage bag for easy storage.
- ✅ UNIVERSAL FIT - This cargo bag fits all kinds of cars with racks. Take the cargo bag to the park, the beach, the sports field, or any place you need to be storaged. Works on ALL vehicles with rack. Suitable for cars, vans, SUVs,etc.
The given Biggest Cargo Carriers are the best to provide you with enough space for all of your needs. You have to think about the weather conditions in which you will use it and how easily you can install and uninstall it. Also, you have to think about the weight limit you are going to carry with it.
Always check the weight limit of your roof rack and your car roof. Because if you overload it, then the effect can be harmful to your car; it can damaging your vehicle.
–our editorial board has reviewed this article and has been approved for publication according to our editorial policy.
Last Update : 2022-09-26