What is a disc wheel?

A disc wheel is a type of bicycle wheel that does not have traditional spokes, but rather consists of a solid, disc-shaped structure that covers the entire area between the hub and rim. It is also called a full disc wheel or full disc. The screen is typically made of carbon fiber or other lightweight materials to save weight and maintain aerodynamic efficiency.

Disc wheels are often used in time trial and triathlon competitions where aerodynamics play a crucial role.

What is the difference between a disc wheel and a spoke wheel?

With disc wheels, the air resistance is not as great as with spoke wheels. However, they are heavier, less maneuverable and can be blown away in strong crosswinds. For races that are short, flat and require fewer turns, such as: For example, racing on an indoor track, disc wheels are an excellent choice.

Disc wheels vs. hubcaps

A wheel cover can be a useful alternative if purchasing a disc wheel is not an option. However, using a wheel cover also comes with some potential disadvantages. One such disadvantage is the presence of a lip and transition where the plastic cover comes into contact with the rim. This can create an air gap that can interrupt the airflow. Additionally, wheel covers may not fit properly on certain frames or bikes with disc brakes, which can cause further problems.

Even professionals use window covers. This is Jesse Thomas' bike from his victory at the 2012 Wildflower Triathlon. Photo: Triathlete Magazine

The advantages of a disc wheel

Considered the most aerodynamic option for cycling, a disc bike can help you reach higher speeds, especially over long distances. By eliminating spokes, which can create turbulence and air resistance, disc wheels offer better aerodynamic properties compared to traditional spoke wheels. They are designed to minimize wind resistance by creating a smooth surface that allows the wheel to move through the air more efficiently.

disc wheel for triathlon

In a race against time, the smallest details often make the difference. In triathlon, these small differences can determine who wins and who loses. The most powerful triathlon disc wheels feature advanced aerodynamics that provide an advantage when every second counts. They are designed to optimize the speed of participants in triathlons and maintain stability in crosswinds.

Solid rear wheel for time trials

Time trial bikes feature a solid rear disc wheel that reduces drag and increases overall speed. The solid disc design minimizes the turbulence created by traditional spoked wheels, resulting in smoother airflow and less drag. This is particularly advantageous in time trials, where every second counts and aerodynamic efficiency is crucial. In addition, the massive rear wheel offers a stiffer and more responsive ride, optimizing power transfer from the rider to the road.

Carbon Solid Disc wheels recommend

The Super-9 Tubeless Disc disc brake wheel from Zipp is tubeless capable and has an internal width of 18 mm. 1132g total weight.

The Princeton CarbonWorks BLUR 633 V3. Tactic hub internals. Disc or rim brakes. Ultra-stiff rim with holeless tire bed and complete monocoque construction. 970g total weight.

D-X disc wheel