Outer rim width

The outer width of the rim is crucial for aerodynamics, comfort and tire compatibility, especially on road bikes. Wider rims provide smoother airflow and reduce drag, which is beneficial at higher speeds. With the trend towards wider tires, wider rims also bring better handling and efficiency.

Outer rim width plays a key role in a wheel's aerodynamic properties, riding comfort and compatibility with different tire types. It is particularly important for road bikes. This parameter refers to the total rim width measured from the outside of one rim wall to the other.

How does this parameter affect aerodynamics?

Wider rims allow air to flow more smoothly between the tire and rim, provided the rim is narrower than the tire, which significantly reduces aerodynamic drag. This is especially important at higher speeds, such as in time trials and triathlons, where every second counts. Combining the right rim width with a suitable tire can optimize airflow and contribute to greater riding efficiency.

With the current trend towards wider tires, it is therefore ideal to choose wider rims, which also have a positive effect on handling.

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