Wheel Durometer and Diameter: Optimizing for Track vs Road in Inline Speed Skating

When it comes to inline speed skating, selecting the right speed skate wheels is one of the most critical decisions a skater can make. Two of the most important, yet often misunderstood, factors in wheel performance are durometer (wheel hardness) and diameter. In this guide, we break down what these terms really mean, how they impact performance, and why elite athletes around the world trust Bont wheels to deliver podium-worthy results.

What Is Durometer and Why Doesn't Every Wheel List It?

Durometer is the measurement of a wheel’s hardness, typically rated on the A scale (e.g., 85A). But here’s the catch: most race wheels are produced with a tolerance of ±3A. That means a wheel labeled as 85A could actually measure anywhere between 82A and 88A, a significant range that dramatically affects performance.

This inconsistency is why many wheel manufacturers have abandoned traditional durometer markings in favor of Firm, X-Firm, or XX-Firm labels. It sidesteps complaints from elite racers who demand uniform performance across a pack of wheels.

At Bont, we use precision manufacturing techniques and modern testing equipment to minimize variability and maintain tight tolerances. This commitment to consistency is one of the many reasons top skaters choose Bont speed skate wheels.

Understanding the Performance Differences

Different hardness levels perform better under different racing conditions:

• 81A (Soft) – Ideal for sprinting. Offers maximum grip and control.
• 83A (Medium) – The most versatile wheel, suitable for 70% of track and road events.
• 85A (Hard) – Best for ultra-smooth tracks and longer distance races. Offers greater durability but reduced grip.

Note: Some manufacturers test durometer immediately after molding, while others cut the wheel in half for more accurate results. This is why the same "83A" may feel different across brands.

Why Durometer Matters So Much

• Softer wheels (lower durometer) = better grip, faster wear
• Harder wheels (higher durometer) = longer lifespan, less traction

If you’re racing outdoors or on rougher terrain, a softer wheel will help you maintain control. For indoor or high-speed smooth road racing, harder wheels reduce drag and boost speed.

The Hidden Technology: Flexbands and Hub Materials

Flexbands: The Core of Speed

Inside all high-end Bont wheels lies a flexband made from superball-like material. This isn't just marketing—it’s science. Flexbands:

• Add rebound energy, making your stride more efficient
• Improve grip without sacrificing speed
• Deliver a responsive feel that racers love

Hub Materials: Plastic vs. Aluminum

Most hubs are made from fiberglass-reinforced plastic, which balances weight and stiffness. Aluminum hubs perform better due to their superior rebound, but their production involves multiple extra steps, making them cost-prohibitive for most skaters.

Still, hub flexibility matters:

• Flexible hubs = easier cornering, better control
• Rigid hubs = more speed, but harder to manage on technical tracks

At Bont, we engineer our hubs for the optimal balance of strength, stiffness, and maneuverability.

Bont’s Commitment to Quality and Innovation

Bont doesn’t just make wheels—we innovate them. Our elite skaters rely on wheels that deliver:

• Consistent performance
• World-class grip and speed
• Unmatched rebound and responsiveness

Each Bont wheel is backed by over 50 years of skating expertise and real-world racing feedback.

Check out our full range of inline skate wheels for every racing condition.

Related Products You Might Like

• Bont Elemental Inline Wheels – Affordable performance wheels for training and racing
• Bont Red Magic Hardcore – World-championship-winning wheel with elite-grade urethane and flexband
  

Frequently Asked Questions

What durometer is best for inline speed skating?

It depends on the race type and surface:

• 81A for sprints or rough surfaces
• 83A for most conditions
• 85A for smooth tracks and long distances

Why don’t some wheels show a durometer rating?

Because the ±3A manufacturing tolerance causes too much variability. Labels like "Firm" and "X-Firm" simplify performance expectations.

Do Bont wheels use flexbands?

Yes, all our pro-level wheels include high-rebound flexbands to enhance speed, grip, and responsiveness.

What's better: a soft or hard wheel?

Softer = more grip, wears faster.
Harder = less grip, lasts longer. Choose based on your surface and style.

Are aluminum hubs worth it?

They offer better rebound but are more expensive. Most elite skaters stick with fiberglass-reinforced hubs for the best balance.

Ready to roll with the best?

Explore Bont’s full line of speed skate wheels and inline skate boots to take your racing to the next level.