Tonneau Covers by Bed Size — 5, 5.5, 6.5, 8 ft

Match Your Cover to Your Bed Length

Tonneau covers are bed-specific. A cover built for a 5.5 ft bed won’t seal properly on a 6.5 ft bed — even from the same manufacturer. Measure your bed before you buy.

The trap is that advertised bed lengths are rounded. A “5.5 ft” bed is not 66 inches: it is closer to 67.1 on an F-150, 67.0 on a Ram 1500, and 66.7 on a Tundra. That half-inch spread is enough to stop a clamp from seating. Get your exact number from the Bed Size Finder, or measure it yourself with our truck bed measuring guide — takes 5 minutes.

5 ft beds

Mid-size short beds. Limited cover options, so check fitment lists carefully rather than assuming a “mid-size” listing applies.

• Trucks: Toyota Tacoma (Access Cab), Honda Ridgeline, Ford Maverick (Crew Cab), Chevy Colorado Gen 3 at 5’2”.
• Guides: Tacoma covers, Colorado covers, Ranger covers.

5.5 ft beds

The most popular size on the road, and the one with the widest cover selection. If a brand only makes one SKU for your truck, this is usually it.

• Trucks: F-150 SuperCrew, Silverado 1500 Crew Cab, Ram 1500 Crew Cab, Tundra CrewMax.
• Guides: F-150 covers, Silverado 1500 covers, Ram 1500 covers, Tundra covers.
• Watch for: RamBox cargo boxes narrow the usable rail width on the Ram, and the Multi-Flex tailgate changes rear clearance on 2022+ Silverados. Both are covered in the Fitment Checker.

6 ft and 6.5 ft beds

Strong selection across every cover type. The main hazard is assuming Ford and GM rails are interchangeable at the same nominal length — they are not.

• Trucks: F-150 SuperCab, Ram 1500 Quad Cab, Silverado 1500 Double Cab, Nissan Frontier long bed, GMC Sierra 1500.
• Guides: Frontier covers, and the type comparison in tonneau cover types.
• Watch for: a retractable canister eats 12–18 inches of bed length here, which matters far less on a 6’6” bed than on a 5’8” one. The Bed Volume Calculator shows what you actually lose.

8 ft beds

Work-truck territory. Fewer soft covers are offered at this length; most retractables and hard folds cover it well.

• Trucks: F-150 / F-250 / F-350 Regular Cab, Ram 1500 / 2500 / 3500, Silverado 2500HD and 3500HD.
• Watch for: panel weight. An 8 ft hard fold is heavy enough that a two-person install stops being optional. If you are hauling at the limit, check the numbers with the Payload Calculator before you add cover weight and a rack.

Still not sure?

Bed length is one of three measurements that decide fitment — rail width and clamp depth matter just as much. Work through all three in the measuring guide, look your truck up in the vehicle database for factory bed specs by year and generation, or browse straight to your truck in tonneau covers by truck make and model.