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Energy return wheel

The Future of Motion is Airless.

After 25 years of relentless innovation and rigorous lab testing, the Energy Return Wheel (ERW) has arrived. We’ve eliminated the flat tire by re-engineering the physics of the wheel itself.

Experience a maintenance-free ride that doesn’t sacrifice performance. Our patented screw-force technology captures energy from the road and returns it to your drivetrain, increasing EV efficiency by up to 22%. Whether on a bicycle or a high-speed vehicle, ERW delivers a smooth, anti-bounce ride on any terrain.

Watch the ERW in Action

Proven Performance: Independent Test Results

The Science of Efficiency
The Coefficient of Rolling Resistance

measures the energy lost as a tire deforms. While standard air-filled tires struggle at high speeds, the Energy Return Wheel (ERW) excels, maintaining elite efficiency where traditional tires fail.

energy return wheel test — Data Breakdown: Efficiency at Speed
**51.8 MPH:** = **0.009516**
**71.4 MPH:** = **0.0117**

**The Highway Advantage:** Most tires are tested at low speeds. ERW’s ability to maintain a 0.0117
rating at **71.4 MPH** (vs. the industry average of 0.012 on asphalt. This
proves ERW design manages heat and deformation better than pneumatic alternatives.

Validated Performance Metrics

We don’t just promise results; we prove them with high-speed independent data.

Metric	ERW Performance	Industry Standard (Avg)	Investor Value
CRR @ 71.4 MPH	0.0117	~0.0120	High-Speed Viability: Solves the heat-dissipation hurdle of traditional airless designs.
Drivetrain Efficiency	16–22% Gain	Baseline	EV Range Extension: Directly increases vehicle value by reducing battery drain.
Maintenance Cost	$0 / Year	~$400-$800/yr (Fleets)	OPEX Reduction: Eliminates pressure checks, flat repairs, and costly downtime.
Operational Uptime	100% Reliability	85-90% (Fleet Avg)	Scalable Logistics: Ideal for autonomous delivery and last-mile urban fleets.

What These Numbers Mean for You

Fuel & Range Extension: A 10% reduction in rolling resistance typically boosts fuel economy by 1.1%. With ERW, we’ve seen up to a 22% increase in drivetrain efficiency—a game-changer for Electric Vehicle (EV) range.
Superior Energy Return: Our tests utilized a soft 35 Shore Hardness rubber. Even with high-grip, softer materials, the ERW internal mechanism returns energy to the road rather than wasting it as heat.
Engineered Stability: For every 1,000 lbs of load, only 11.7 lbs of force is required to maintain speed of 71.4 MPH. This translates to less strain on your motor and a smoother, more controlled ride.

ERW DYNO

Validation, ERW is ready to solve the $250B+ tire industry’s greatest pain points: downtime and inefficiency.

ERW usdot Testing

The Energy Return Wheel (ERW) tested at the

USDOT High Altitude Testing Laboratory

Testing Equipment and Conditions:

USDOT 48″ AWD Dynamometer
Dynamometer resistance set to 6,000 lbs.
Test speed range: 55 mph to zero mph.

Tire Specifications:

ERW tire with 45 shore hardness rubber tread.
Comparison tire: $400 Radial tire inflated to 35.5 psi.

Results:

ERW Coast-Down Time (55 to 0 mph): 18.6 seconds
Radial Tire Coast-Down Time (55 to 0 mph): 12.2 seconds

Hyper Speed Capable.

50+% improvement in rolling resistance.

16 – 22% improvement in Drive Train Efficiency.

How many seconds can you coast 55 – 0?

FIND OUT MORE

Test done with 2000 ML 55 AMG

Featured Video

The Alpha 29 MTB: Flatten the Trail, Not Your Tires.

Stop fighting your tires and start flowing with the trail. Traditional pneumatic tires act like pressurized basketballs—the harder they hit a rock, the harder they bounce you off your line. The Alpha 29 ERW changes the physics of the ride.

By replacing air with our patented Active Tension system, the Alpha 29 doesn’t just absorb shocks—it harvests them. Imagine carving across a technical rock garden while your tires stay “glued” to the surface. Our Anti-Bounce technology spans potholes and eliminates the vertical “kickback” of air, converting every impact into forward slingshot momentum. With a 16–22% boost in drivetrain efficiency and ultra-low rolling resistance, you’ll climb faster and descend with surgical precision.

No pumps. No spare tubes. Just pure, uninterrupted power. This isn’t just a wheel; it’s a mechanical advantage.

ERW MTB

unleash the future of riding

The Energy Return Wheel Alpha 29er

is not just a tire; it is a groundbreaking shift in cycling technology. It is an airless system engineered to deliver unparalleled performance, efficiency, and durability for all-terrain mountain biking and the unique demands of modern electric bikes. Developed over 25 years of rigorous testing, this patented system of rubber stretched over composite rods means you are completely free from maintenance worries.

Performance: More Speed, Less Resistance

You demanded speed and efficiency, and we delivered. The

Alpha 29er

features exclusive millisecond response over atypical terrain, giving you high-speed capabilities impossible with air-filled tires.

⚡️ Drive Train Efficiency Boost: Improve your performance by an amazing 16–22%.
⬆️ Hill Climbing Power: Power delivery is driven by screw force accumulation, acting as an assist for steep ascents.
💨 Fight the Drag: The “Return against wind drag” ensures more power with every pedal stroke or throttle application.
⬇️ Ultra-Low CRR: Significantly reduced rolling resistance is crucial for maintaining maximum momentum, speed, and efficiency.

ERW MTB

Stability: Glue Yourself to the Trail

Our “Anti-bounce” technology is a game-changer for control. The effect allows for maneuvering off an impediment rather than experiencing a jarring kickback or bounce.

🏔️ Surgical Precision: The ERW carves across slopes with massive PSI (pressure per square inch) to the surface, maintaining a contact patch impossible for pneumatic tires.
🤸‍♀️ Total Control: Enjoy smoother take-offs, responsive handling, and precise landings.

ERW MTB

Durability: Ride Forever

The confidence to explore remote territory without fear. Eliminating flats and punctures is the dream come true, and we made it a reality.

🚫 Zero Downtime: Reduced maintenance gives you more time to ride and explore.
🛡️ Puncture-Proof: 100% airless construction means flats are simply a memory.

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“This Wheel is a must-have for those seeking both speed and comfort on their ride”

Aero lite 700c

ERW Aero Lite 700c: The Speed of Certainty 🏁💨

15% Less Maintenance. 22% More Power. 100% Puncture-Proof.

The Aero Lite 700c isn’t just a new tire; it is the culmination of a 25-year obsession with the physics of energy. Built on the same “Energy Return” principles that allowed Brian A. Russell’s “Super Shoe” to slash oxygen consumption by 15% for elite runners, the Aero Lite 700c now brings that same metabolic and mechanical advantage to the road.

[ UPGRADE TO AERO LITE]

The Science of Speed 🧪✨

🌪️ Aerodynamic Speed Optimization: The “Aero Lite” profile is precision-engineered to “slice through the wind.” By reducing drag at the wheel’s leading edge, you maintain higher top-end speeds with zero extra effort.
🌬️ The Headwind Solution: Stop fighting nature. Our patented “Screw Force Accumulation” provides a mechanical “return against wind drag,” effectively pushing back against the air that slows you down.
🏔️ Ascent Assist: Feel the boost on every incline. Energy stored in the wheel’s internal rods is returned at the “dead spot” of your pedal stroke, giving you an active “slingshot effect” that makes hills feel flatter.

The 15% Maintenance Miracle 🛠️🚫

We’ve done the math: Aero Lite users spend 15% fewer hours on bike maintenance every year.

Zero PSI Anxiety: No more checking your pumps every morning or worrying about slow leaks. 📈
Puncture-Proof Peace of Mind: Road debris, glass, and pinch-flats are a thing of the past. 🛡️
More Miles: Explore further and train harder with the confidence that you will never be stranded. 🌍

Unrivaled Stability: The “Anti-Bounce” Advantage 🧲🎯

High-pressure road tires are notorious for “chattering” over rough asphalt, causing you to lose speed and grip.

⏱️ Millisecond Response: The Aero Lite 700c features an exclusive response rate that keeps your rubber “glued” to the surface.
🏎️ Massive PSI to the Surface: Experience a contact patch that “carves” through corners with surgical precision and zero sidewall roll.
⬇️ Active Down Force: Our negative-tension system actively pulls the tire toward the road, spanning cracks and irregularities for a smoother, faster, and safer ride.

The Ultimate E-Bike Multiplier 🔋⚡

For E-bike riders, the Aero Lite 700c is a powerful range-extender. By improving drivetrain efficiency by 16–22%, you get more miles per charge and instant torque when you twist the throttle.

The era of the “balloon tire” is over. The era of Energy Return is here..

Energize Your Ride

Transforms your cycling experience! Unlike standard tires, this innovative solution changes the contact angle of approach, providing a smoother ride that lessens the feel of bumps on any terrain. Standard tires tend to sink into the bottom of potholes and cracks increasing the axel’s vertical travel. Traveling to the bottom of the hole then being bouncing upward, past the top of an impediment by the tire’s air pressure. ERW is anti-bounce an tends to span potholes and cracks keeping the axel/hub more level. Cutting the reaction more than in half. Join us as we dive deep into the technology behind ERW and explore how it can enhance performance and comfort for cyclists everywhere. Composite Hoop with ‘in wheel’ suspension. Note the high frequency response rate of ERW.

ERW Spans Holes Tire Finds Bottom

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A Legacy of Innovation: ERW & MTSU’s Award-Winning NASA Collaboration

Award-Winning Innovation. NASA-Proven Performance.

Witness the moment MTSU’s “The Beast” took the world stage at the NASA Human Exploration Rover Challenge. By integrating the revolutionary Energy Return Wheel (ERW), the team didn’t just compete—they won the Neil Armstrong Best Design Award.

This collaboration showcases the “secrets” behind our 25 years of development: a wheel that handles like a high-performance tire but offers the indestructibility of a solid structure. From the craters of the moon to the streets of today, ERW is paving the way for a maintenance-free future.

[Explore the MTSU Success Story

The Evolution of ERW at NASA

Consistency is the ultimate proof of engineering excellence. Following our Neil Armstrong Design Award, the MTSU Experimental Vehicles Program returned to the NASA Human Exploration Rover Challenge to push the ERW airless tire to its absolute limit.

The result?

A first-place finish among all U.S. teams and a third-place finish globally.

This achievement validates 25 years of ERW development, proving that our airless technology doesn’t just work in a lab—it dominates on the most challenging terrain NASA can simulate. Dive into the behind-the-scenes engineering that secured our spot as a world leader in rover technology and learn how we are shaping the future of lunar and terrestrial transportation.

MTSU Rover The Beast — MTSU Rover ‘The Beast’ ERW Equipped

Two Years of NASA-Level Validation: Proving the ERW Advantage

While others are still testing in labs, the Energy Return Wheel (ERW) has spent two years proving its worth on the world’s most demanding stage: the NASA Human Exploration Rover Challenge. This sustained success under NASA scrutiny provides a “Gold Standard” validation for ERW airless technology.

The Design Benchmark (Year One)

Objective: Prove that airless architecture can survive extreme off-world simulation.

The Result: Captured the prestigious Neil Armstrong Best Design Award.
The Validation: NASA judges recognized the ERW for its superior structural integrity and innovative energy-return physics. This phase proved that the ERW concept was not just viable, but a “Best-in-Class” solution for high-stress environments.

The Performance Benchmark (Year Two)

Objective: Prove that the design translates to world-class speed, efficiency, and durability.

The Result: #1 in the United States | #3 in the World.
The Validation: The MTSU Experimental Vehicles Program utilized refined ERW technology to dominate the field. By securing a podium finish globally, ERW proved it could handle high-torque, high-speed maneuvers on cratered, unpredictable terrain with zero failures.

The Conclusion: A Technology Ready for the Real World

Two years of consecutive success at NASA-monitored events confirm three critical facts for our stakeholders:

Extreme Reliability: Zero “flat tires” or structural failures across miles of simulated lunar obstacles.
Superior Mechanical Efficiency: The energy-return mechanism significantly reduced pilot fatigue and increased rover velocity.
Scalable Application: The same technology that conquered the NASA rover challenge is now being applied to Electric Vehicles (EVs) and Commercial Fleets to increase range and eliminate maintenance.

ERW side wall technolgey

airless

The future is now!

Gear Up for Greatness with ERW airless tire! No matter what wheels you envision, our team is dedicated to making it happen for you. Explore the advantages of ERW airless tires and how they can elevate your experience. We believe in success together, so let’s roll out with confidence!

– team britek

Welcome

Pneumatic Tires have been around for 150 years.

Tire Reaction Speed has limited your driving experience.

Everything you think you know about high-speed performance is about to change!