Red Car With Roof Rack Driving On Snowy Forest Road

Biggest Roof Boxes Available – A Guide

No matter how many times we’ve gone on trips, packing is almost always an issue. There just seems to be no amount of repacking that helps. And that was always the case for me.

Bringing along three kids requires so much stuff. We’ve been on trips when even the backseat was so stuffed that there was barely any space to breathe – even when we had a small roof box for the other things that no longer fit in the trunk.

In reality, there are just times when a regular-sized roof box is not enough to store all the things you need to bring. So, the most practical thing to do is look for the biggest cargo boxes available.

A massive roof box that can fit your luggage, sports gear, camping equipment and all your other stuff is a brilliant option rather than jamming everything in the trunk and backseat. It frees up so much space and makes your passengers sit comfortably throughout the trip.

Here’s a quick guide to finding the biggest roof cargo box that might just suit your storage space needs during travel.

#5 Yakima – SkyBox Aerodynamic Rooftop Cargo Box 

This cargo box comes in four sizes: 12, 16, 18, and 21 cubic feet and fits most cars, wagons, and SUVs. But because we’re looking for the biggest cargo boxes available, then we’re recommending the 21 cubic feet for your gigantic storage needs.

The downside of this cargo box is that it weighs a massive 75 lbs but a low weight capacity of only 28 kg. Some cargo boxes with the same volume have much higher weight capacity than the Yakima Skybox.

What is good about this cargo box though is that besides its huge space, it opens on both sides and has a super latch that secures the lid to its base. It is easy to install and can be mounted without using any tool.

Priced at $649.00, it’s quite expensive but is made more durable using its lid stiffeners. It can be mounted within a few minutes, which gives it an edge among other cargo boxes.

What reviewers like about it:

  • Easy to set up
  • Good customer service
  • High-quality construction

What they don’t like:

  • Easier to set up with help from another person
  • Some encountered issues with the lock

#4 Marksign Waterproof Truck Cargo Bag with Net

Technically speaking, this product isn’t really a roof box. Rather, it’s a cargo bag that you can carry on the roof of your vehicle. 

The reason this landed on the top cargo carriers is because of its massive capacity. At 26 cubic feet, it measures 51 x 40 x 22 inches and sure can fit tons of stuff you want to bring. It’s also perfect for people with trucks as it fits well on any truck bed. 

What’s good about this cargo bag is that it has four heavy-duty handles that make it easier to carry and move around. And instead of having straps, it has a heavy-duty cargo net to help keep it firmly in place. 

Marksign cargo bag comes with 12 strong metal carbiners, and the net can stretch up to 8 x 12 feet, making it easier to secure the bag while you’re on the road.

You don’t have to worry about getting your cargo wet because it’s 100% waterproof. It has no needle holes as it is electrically welded from 500D tarpaulin. Its zipper is coated with vinyl and has flaps that are sealed with velcro to keep the water out.

Its material is not only made to repel water, but it’s also UV resistant so you’re sure that this product will last for a long time.

Priced only at $139.99, this could be the best biggest roof cargo bag you can find.

What reviewers like about it:

  • Waterproof
  • Easy to put on the car
  • High-quality material
  • Stays in place even with bad weather

What they don’t like:

  • Hard to hold its shape
  • Some encountered issue with the zipper

#3 Modula Racks Travel Twin 650 Litre Roof Top Cargo Box 

With an internal capacity of 650 liters, this cargo box sure can fit a lot. It is compatible with most aftermarket and factory crossbars such as Modula, Sport-Rack, Yakima, Rhino-Rack, and Thule.

It has a dual-opening lid, which allows you to load and lock from both sides of the vehicle. It also has a patented quick-release tool-free leg that makes it easier to install and remove without needing help from an extra person. To add to that, this cargo box opens and closes smoothly thanks to its premium hinge hardware.

Its upgraded acrylic lid is tough and is easy to maintain. To keep it looking new, all you need to do is treat it with standard car products that you may already have for your vehicle.

It is said to be more expensive than most of the recommended biggest cargo boxes in this article. However, it has a 5-year warranty that can give confidence to the users in buying this product and at the same time assure them that their investment is protected.

*No available user’s review for this product

#2 Thule Force Cargo Box

Most Thule products have exceptional performance. At 21 cubic feet, the Force XXL is perfect not just for your luggage needs, but also offers good space for snowboards and skis.

While it is easy to use, it’s not as easy to mount as the others despite being tool-free. It can only take a few minutes to install but more precision is needed for this one. Although in general, this is the only drawback we can find in terms of its performance.

It has a diamond-textured aeroskin lid that is durable with an aerodynamic shape that helps cut through the air and reduces drag and noise. Its low-profile design allows better access to the garage without compromising the space capacity.

To ensure that the box is securely closed, it has a SecureLock feature that locks the gear firmly. And because it has a dual-sided opening, you can open it from both sides of the vehicle.

It weighs 56 lbs and has a remaining load capacity of 110 lbs. Priced at $831, its high cost makes up for its high performance.

What reviewers like about it:

  • No overhang
  • The locks work great

What they don’t like:

  • Some encountered issues with their cargo being soaked
  • Hinge issues

#1 Thule Motion XT XXL Cargo Carrier

The Thule Motion XT cargo carrier comes in three sizes: 16, 18, and 22 cubic feet. However, since we’re talking about the biggest roof boxes, then the 22 cubic feet box fits the bill.

The XXL version is perfect for sports and camping gear. With its 165 lbs weight capacity and its long length, it can fit up to 5 snowboards and 7 pairs of skis. And because it has a wide frame, it can easily fit a suitcase in as well.

It also opens on either side of the vehicle, which makes it convenient to the users.

Priced at $829.95, this is rated as #1 slightly ahead of Thule Force cargo boxes because it’s quicker to mount. Other than that, both are known as high-quality products popular among users.

What reviewers like about it:

  • Easy to mount
  • Thule has great customer service
  • Good safety features
  • The clamps work well
  • Can hold a good amount of gear
  • Quiet on the road
  • Waterproof
  • Sleek and stylish

What they don’t like:

  • Too heavy to be handled by one person
  • The cover flexes and can be difficult to open

Wrap Up

These cargo boxes are the top-performing biggest roof cargo boxes you can find in the market. Look into this review to see what would suit your travel storage needs perfectly.

You might also want to check my previous post to help you learn how to pack a roof box carrier. Some great tips are there to guide you with packing without overloading your roof box.

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