Why Is a Truck Bed Cover Called a Tonneau?

A tonneau cover is a type of protective covering that is often used on the back of a truck bed. The word “tonneau” is derived from the French word for cask or barrel, and it was originally used to refer to a convertible car top.

Nowadays, it is commonly used to refer to any kind of protective covering that is placed over the back of a truck.

A truck bed cover serves two main purposes. First, it helps protect items stored in the bed from the elements such as wind, rain, and snow.

Because these covers are usually made from waterproof materials like canvas or vinyl, they can keep items dry and secure even in inclement weather. Second, tonneau covers can also help improve aerodynamics by reducing wind resistance when driving at higher speeds. This can help improve fuel economy.

Tonneau covers come in a variety of styles and designs to suit different needs. Some are soft covers that attach with straps or snaps while others are hard shells that fit over the entire bed of the truck like a lid. Soft covers are typically easier to install than hard shells but they may not be as durable in extreme weather conditions.

There are several advantages to using a tonneau cover:

  • Protection – Tonneaus keep items stored in the truck bed safe from wind, rain, snow and other elements.
  • Improved aerodynamics – Reducing wind resistance can help improve fuel economy.
  • Style – Tonneaus come in various styles and designs so you can find one that suits your taste.


: A tonneau cover is an essential accessory for any pickup truck owner who wants to protect their cargo while also improving their vehicle’s performance. It’s called “tonneau” because it resembles the shape of a cask or barrel; hence its French origin which has been adopted into English language terminology for this type of protective covering over the back of pickup trucks.

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Stephen Dunn