Roof racks and cargo boxes: how to choose (2026 guide)

To choose a roof rack and cargo box, start with your roof type and the rack maker’s fit guide. Then pick the bars, and a box that suits your gear, your roof load limit and your garage height.

A rack and box add space for bulky, light gear such as skis, camping kit or luggage. They only work well if the rack is made for your exact roof and the total load stays within limits.

Compare the racks and boxes

Product	Type	Size / volume	Max load (maker)	Profile or opening	Suits
Thule WingBar Evo	Crossbars	43–60 in (108–150 cm)	220 lb (100 kg)	Aero, T-track	Bars left on long-term, T-track accessories
Thule SquareBar Evo	Crossbars	43–60 in (108–150 cm)	220 lb (100 kg)	Square steel	Classic square-bar setups
Yakima JetStream	Crossbars	50, 60, 70 in	not stated	Aero (teardrop), T-slot	Yakima tower setups
Rhino-Rack Vortex StealthBar	Crossbars	Cut to roof width	not stated	Low, sits 1.5 in (35 mm) above rails	Cars with raised rails
Thule Motion 3 L	Cargo box	16 cu ft (450 L)	165 lb (75 kg)	Dual-side	Luggage, skis to 71 in (180 cm)
Yakima SkyBox NX Skinny	Cargo box	12 cu ft	not stated	Dual-side	Box plus a bike or board

“Not stated” means the figure was not listed on the manufacturer page used. Thule’s imperial figures come from its US pages, and the metric figures in brackets come from its UK and US pages.

How to choose a roof rack and cargo box

Check your roof type

Fit starts with the roof, not the bars. The common types are:

Naked (bare) roof: no rails. The rack clamps into the door openings with vehicle-specific pads and brackets.
Raised rails: rails with a gap underneath. These are the most flexible to fit.
Flush rails: rails that sit tight to the roof with no gap. They need a foot made for them.
Fixed points: hidden mounting points, often under small covers or in a trim strip.
Rain gutters: older vehicles and some vans have a gutter along the roof edge.

Rail width, roof curve and door shape vary even within one type. So a rack is close to always vehicle-specific.

Use the rack maker’s own fit guide with your exact make, model, year and body style. It tells you which feet, fit kit and bar length to buy.

Choose aero or square crossbars

Aero (wing or teardrop) bars are shaped to cut wind noise and drag. Many have a T-track on top for accessories.

Square bars are usually steel, simple and strong. They tend to be noisier and may need adapters for some accessories.

If you leave the bars on most of the time, an aero profile is the more comfortable choice on long drives.

Work out your load limit

There are 2 limits, and you must respect the lower one:

Vehicle roof load limit. This is in your owner’s manual. It is often lower than people expect.
Rack load limit. The rack maker sets this, and it can depend on the foot and fit kit.

The rack, the box and everything inside count toward the vehicle limit. Subtract the weight of the bars, feet and empty box before you add gear.

Some rack makers set lower limits for rough or unsealed roads, so check that guidance too. Load heavy items low and centered, and put light, bulky items in the box.

Choose box volume and length

Makers quote box volume in liters or cubic feet. Bigger is not always better. A large box is heavier, adds height and can block the tailgate.

Check 2 lengths:

Internal length for skis or snowboards, if you carry them.
Rear overhang, so the tailgate can open fully. Makers often state hatch or trunk clearance on the product page.

A narrow box leaves room on the bars for a bike or board carrier beside it.

Check the opening, locks and mount

Dual-side opening lets you load from the curb on either side of the road. That is safer than standing in traffic.

Look for a lock that only releases the key when the lid is fully shut. Also look for a mount you can tighten with a knob or quick clamp rather than tools. Some mounts show when they are tight enough, which reduces the guesswork.

Cut noise and fuel use

Anything on the roof adds drag and some wind noise, and a box adds more than bars alone. That means higher fuel or energy use.

The simple fix is to take the box off when you do not need it. Remove the bars too if you rarely use them.

Store the box flat or hung on a wall. Keep a trunk organizer inside the car for everyday items, so the roof only carries trip gear.

Check height and garage clearance

A box can add a lot of height. Measure the total height with bars and box fitted. Stick a note on the dashboard before you use a garage, parking structure or drive-through.

Low-profile boxes and low-mounted bars help where clearance is tight.

What each product offers

Thule WingBar Evo

The WingBar Evo is Thule’s aero crossbar. It is sold as a pair in lengths from 43 to 60 in (108 to 150 cm). The 50 in (127 cm) pair is listed at 6.88 lb (3.12 kg).

The US page lists a maximum load of 220 lb (100 kg). Thule also reminds buyers to check the vehicle’s roof load limit.

Thule describes a TrailEdge design and WindDiffuser technology to reduce drag and noise. An upper T-track with QuickAccess interface and SwingBlade end caps takes accessories.

Feet and a vehicle-specific fit kit are sold separately, chosen through Thule’s fit guide. It suits drivers who keep bars on for long periods and want to fit T-track accessories.