Aerodynamic designs in road bike wheel sets are aimed at reducing air resistance (drag) and improving the overall aerodynamic performance of the bicycle. Here are some common aerodynamic designs and features found in road bike wheelsets:

Rim Shape: The shape of the rim is one of the most critical factors in aerodynamic design. Wheelsets may feature various rim profiles, including:

Deep-Section Rims: These rims have a high profile, often exceeding 30mm in depth. Deep-section rims reduce drag by smoothing the airflow around the wheel. They are favored for their aerodynamic advantages, especially in time trials and triathlons.

Toroidal or Blunted Rims: These rims have a unique shape with a rounded or blunted leading edge. This design helps reduce drag by delaying airflow separation, making the wheel more aerodynamic.

Aerofoil or Airfoil Rims: These rims have a streamlined, teardrop-shaped profile that minimizes air resistance. They are designed to maintain laminar airflow and reduce turbulence.

Box-Section Rims: These rims have a more traditional, square shape. While not as aerodynamic as deep-section rims, they are often lighter and can still offer some aerodynamic benefits.

Spoke Design: The arrangement and shape of spokes can impact aerodynamics. Some wheelsets use fewer spokes or bladed spokes to reduce air resistance. Radial and bladed spoke patterns are popular choices for aerodynamic road bike wheelsets.

Hub Design: Aerodynamic hubs with minimal protrusions and a streamlined shape help reduce drag. Some hubs feature deep flanges or aero flanges that contribute to improved airflow.

Internal Nipples: Some wheelsets have internal nipples, which are located inside the rim. This design reduces the number of external protrusions and improves the rim's aerodynamic properties.

Smooth Rim Brake Tracks: For road bike wheel sets, a smooth and machined brake track can enhance aerodynamics by reducing turbulence caused by uneven surfaces.

Tubeless-Ready: Tubeless-compatible road bike wheelsets allow for the use of tubeless tires, which can offer lower rolling resistance and improved aerodynamics due to their ability to run at lower pressures.

Disc Brake Aerodynamics: Disc brake wheelsets have different aerodynamic considerations because they don't require a brake track on the rim. Designers can optimize rim shapes for aerodynamics without the constraint of accommodating rim brakes.

Crosswind Stability: Some deep-section rim designs are optimized for crosswind stability. They may feature specific profiles that reduce the negative effects of crosswinds, making the wheelset more predictable and manageable.

Complete Wheel Systems: Some manufacturers offer wheelsets as part of a complete aerodynamic system, including specific tires and frame designs. These systems are engineered to work together for optimal aerodynamic performance.