How Rim Depth Impacts Performance: Shallow vs. Deep Wheels
Choosing the right rim depth is one of the most important decisions you’ll make when upgrading your wheels. Rim depth affects key performance factors including aerodynamics, weight, handling, and overall ride quality. At HED Cycling, we design wheels across a full range of depths to match your goals, whether that’s climbing, versatility, or maximum speed.
What Is Rim Depth?
Rim depth refers to the vertical measurement of the rim’s sidewall, from the tire bed to the outer edge. Generally, shallow rims measure between 20–35mm, mid-depth rims from 40–60mm, and deep rims exceed 60mm.
Shallow Rims (20–35mm)
Shallow rims are typically the lightest and most responsive, making them ideal for climbing and quick accelerations. They’re favored by riders who prioritize agility, comfort, and crosswind stability, including gravel riders and climbers.
Best suited for:
- Mountainous or hilly terrain
- Gravel or mixed-surface rides
- Lighter riders or those seeking easier control in wind
Mid-Depth Rims (40–62mm)
Mid-depth wheels strike a balance between aerodynamic advantage and manageable weight. This depth is often the go-to choice for all-around riders who want a fast, versatile wheel for a wide range of conditions.
Best suited for:
- All-around road cycling
- Gran Fondos, endurance events, and group rides
- Cyclists who want aero gains without compromising control
Deep Rims (62mm+)
Deep-section rims are engineered for pure speed. By reducing aerodynamic drag, they help maintain higher speeds with less effort. These wheels shine in time trials, triathlons, and flat terrain, though they may be more affected by strong crosswinds.
Best suited for:
- Time trials, triathlons, and criteriums
- Flat terrain and high-speed efforts
- Stronger or more experienced riders who can handle crosswinds
Other Factors to Consider
- Rider Weight: Heavier riders often benefit from the extra support and stability of mid-to-deep rims.
- Wind Conditions: If you frequently ride in windy conditions, shallow rims may offer more stability and confidence.
- Ride Type: Gravel and long-distance riders often favor shallower rims for comfort, while racers lean toward deeper aero profiles for speed.
Final Thoughts
When selecting a wheelset, think about your terrain, weather, and riding style. Many riders ultimately invest in two sets, one shallow for windy or hilly days, and one deep for race efforts and flat, fast routes.
If you're unsure where to start, HED’s mid-depth wheels like the bim brake Jet 6 Black or disc brake Vanquish 62 offer the best of both worlds, fast, stable, and ready for anything.
✔️ Expert insight by Andrew Hed
Andrew Hed is the Business Development Manager at HED Cycling and the son of founders Steve and Anne Hed. He leads brand strategy, e-commerce, and customer experience. Read full bio →
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