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Greentech Rolling Forward

GACW INCORPORATED, based in Phoenix, Arizona, has literally reinvented the wheel by introducing an eco-friendly and cost efficient alternative to the extremely pollutive rubber tire. Our patented Air Suspension Wheel (ASW) is an airless mechanical wheel constructed primarily of steel with in-wheel pneumatic suspension.

This Reg CF offering is made available through StartEngine Capital, LLC. This investment is speculative, illiquid, and involves a high degree of risk, including the possible loss of your entire investment.

$946,408.64 Raised

Reasons to Invest

  • Patented, green technology that provides a cost effective alternative to rubber tires.
  • The overall global tire market is projected to reach $322 billion by 2022. Near term commercialization into an expected $30 billion Off-The-Road (OTR) market, with potential adoption into other industries such as construction, agriculture, forestry, automotive, trucking, bicycles, wheelchairs, and armored vehicles.
  • Global miners have completed testing of GACW’s wheel solution with encouraging results. Three additional operational Beta tests are to commence at mines sites in 2022, which may lead to full implementation. Our solution reduces operating costs, improves safety and creates a better overall environmental footprint. 

*Image of GACW's Air Suspension Wheel. The Company is currently in the pre-production phase, and the Air Suspension Wheel is not currently available on the market.


A New Kind of Wheel That Ditches Dirty Rubber

What happens to a tire once it has outlived its usefulness?

Unfortunately, it is often not recycling. Instead, old tires are frequently buried or burned, releasing harmful chemicals and heavy metals into groundwater and air. Tires that end up in landfills waste space and fill up with water that provides breeding grounds for disease-carrying pests such as mosquitoes. 

Global Air Cylinder Wheels (GACW) seeks to change all that. Our Air Suspension Wheels reduce the need for dirty rubber by providing a scalable, cost-effective solution designed to last the full lifetime of the vehicle they transport. Better yet, these wheels are 100% recyclable upon their well-earned retirement. 


The Problem

Rubber Tires Are Harmful to the Environment, Dangerous for Workers & Expensive to Maintain

An industry that uses and disposes rubber tires at an alarming rat, is the mining industry. With over 35,000 open-pit mines globally, the number of environmentally damaging tires disposed of each year is staggering. A study published in the International Journal of Environmental Research and Public Health, estimated that tires account for as much as 10% of overall microplastic waste in the world's oceans. A report by the International Union for Conservation of Nature raised that number to 28%. 

One (1) giant rubber Off-The-Road (OTR) mining tire weighing 13,000 lbs contains 500 gallons of renewable blend oil, 4,000 lbs of carbon black, 2,000 lbs of steel, and over 3 million cu. ft. of synthetic gas (Titan International, June 2014). At the end of its useful life, the tire is disposed of on-site, repurposed or buried because recycling is often too expensive. A report by Tyre Stewardship Australia produced in June 2020 found that 81% of OTR tires are disposed of onsite at the end of their lifetime. 

Rubber tires are expensive

Tires are the mining industry's largest expense after payroll. Rapid wear and tear caused by impact, rock cuts, and extreme and uneven loading means the lifespan of an expensive mining tire is short. Mining companies are forced to use "Band-Aid" solutions such as patch up repairs, tire pressure monitoring, tire retreading, tire cooling systems, and tire rotation to extend the tire's useful life. One (1) 13,000 lb. OTR mining tire can cost over $75,000 and only lasts six to nine months. That is a large expense for a product that does not last.

Rubber tires are a safety hazard

Beyond these serious environmental and budget concerns, off-the-road mining tires represent a huge safety problem for maintenance crews due to potential explosions from overheating, improper inflation or installation, and lightning strikes. Overheating is the most critical operational issue facing rubber tires. Rubber is an amazing insulator, so when it heats up, if the heat is not dissipated, it builds up, increasing the tire's pressure and becomes an immense safety problem. When explosions do occur, they are often fatal with blast areas up to 400 meters.

The Solution

A Wheel That is an Eco-Friendly Capital Asset Rather Than an Expensive, Polluting Consumable

The Air Suspension Wheel (ASW) is an eco-friendly solution constructed almost entirely of steel. No more overheating tires, no more explosions. 

It is an airless mechanical wheel that combines an inner steel hub with an outer steel drum, which are connected by twelve nitrogen filled cylinders and six oil dampers, providing suspension. Customized polyurethane or steel tread configurations are bolted to the outer drum in segments. These individual treads can be replaced without removing the wheel, a lengthy process that takes up to eight (8) hours with a rubber tire. 

*Image of GACW's Air Suspension Wheel. The Company has manufactured 22 more ASWs to be tested , the Air Suspension Wheel is not yet available on the market.

The ASW is so much more than just another wheel

*Image of GACW's Air Suspension Wheel. The Company has manufactured 22 more ASWs to be tested , the Air Suspension Wheel is not yet available on the market.

The ASW is a product designed to have the same lifespan as the vehicle itself (approximately 20 years), meaning fewer replacement costs and less time spent swapping out damaged tires. The ASW can become part of the vehicle and has the potential to become a capital asset. Unlike tires, the ASWs can be leased, with a 15% residual value after 10 years of service. Beyond that, they can be refurbished and leased again. And at the end of its life, the ASW is fully recyclable. 


  • Reduces cost per hour/mile by up to 60%
  • Up to 30% reduced rolling resistance, reducing CO2 and NOX emissions, and making electrical cars go farther
  • Saves at least 8% fuel
  • Up to 40% higher payload capacity
  • Durable and heat resistant, reduces downtime caused by tire failure and replacement
  • No risk of explosion = safer
  • No need for tire pressure and temperature checks
  • Self-aligning, self-balancing, no wheel rotation necessary
  • Functions as a flexible torque coupler
  • Easy installation requiring no specialized equipment and individually replaceable treads do not require wheel removal


*Image of GACW's Air Suspension Wheel. The Company has manufactured 22 more ASWs to be tested; the Air Suspension Wheel is not yet available on the market.

The Market

A Growing Industry with Applications in both Off-The-Road and 
Over-The-Road Market Segments

GACW's focus is catering to the demand from miners seeking viable tire solutions and it is a substantial market for us. The global OTR tire market is estimated to reach $32 billion in 2022 (Source). However, the ASW technology can be applied to all verticals where traditional rubber tires are used, and this market is immense. The overall global tire market is anticipated to reach $280 billion by 2024 with a projected CAGR of 3.2%.


Our Traction

The Air Suspension Wheels are Gaining the Traction We Need to Thrust Us into the Main Market

From 2016 - 2020, our patented technology underwent multiple rounds of field testing with global mining companies with progressively positive results. The data ASW obtained showed lower operating costs, improved safety and a better overall environmental footprint. The testing also brought the ASW to Technology Readiness Level (TRL) 8, a NASA-developed measurement of technology maturity. TRL 9 is a commercially ready product.

This success caught the attention of additional international Tier 1 mining companies, and we are now working with our global manufacturing partner, OTR Wheel Engineering, to complete wheel designs for multiple trucks and loaders. 

In Q2 2022, the manufacturing of two purchase orders (PO) for in total 22 wheels was completed. These wheels are to be installed at operational mining vehicles for beta testing in Q3 2022. Once KPIs (Key Performance Indicators) are met, more POs for these ASWs are expected to follow.

In June 2022, the company received a PO for ASWs for a CAT 793 truck operated from a mining site in the USA. GACW has also been issued more patents - bringing the total number of granted patents to eights, protecting the ASW technology even more. 


We have raised more than $3 million, created an experiences Board of Directors and formed a first-class Advisory Board. 

The ASW technology has a strong patent portfolio with one granted, with 16 patents pending. 

Why Invest

Help Us Make the Entire Tire Industry Better

*Image of GACW's Air Suspension Wheel. The Company has manufactured 22 more ASWs to be tested; the Air Suspension Wheel is not yet available on the market.

Many industries operate under the status quo, resistant to change. Companies that are reluctant to innovate will not survive. Those companies that do adopt new technologies and embrace innovation will prosper. Tire use and its negative environmental impact will change inevitably. Governments are starting to mandate change on tire disposal and this is already accelerating our technology's adaptation into the market.

Our Air Suspension Wheels are an effective and viable alternative to rubber tires. They are cost-efficient, safe and are better for the environment and those industries that rely on it. 

Help us change the tire industry!

Bold (⌘B)


3110 West Ray Road, Suite 201
Chandler, AZ 85226

GACW INCORPORATED, based in Phoenix, Arizona, has literally reinvented the wheel by introducing an eco-friendly and cost efficient alternative to the extremely pollutive rubber tire. Our patented Air Suspension Wheel (ASW) is an airless mechanical wheel constructed primarily of steel with in-wheel pneumatic suspension.


Dr. Zoltan Kemeny
Dr. Zoltan Kemeny
Chief Executive Officer, President, and Treasurer

Acknowledged expert in vehicle dynamics with over 44 years of experience in R&D and engineering. Owns and co-owns over 250 patents and  Built up four startups and exited with success. Holds degrees in structural dynamics engineering, architecture, and seismology.

Harmen van Kamp
Harmen van Kamp
Senior Vice President of Global Sales

Sales professional with over 15 years of experience in sales and business development. Worked in various sectors including mining, heavy machinery, FMCG, and agricultural technology.

Maria Kemeny

Maria Kemeny


Secretary of GACW Inc.

Morten Jensen

Morten Jensen

Senior Engineer

Senior mechanical design engineer with over 25 years of experience across variuos industries. Focus on all aspects of design - ranging from conceptual design, detailed CAD design, design analytics and numerical simulations, testing and quality control, and design documentation."

MOD Ventures

MOD Ventures

Fractional CFO and Accounting Services

MOD Ventures, LLC is the premier outsourced accounting and advisory firm.

We work with business owners and entrepreneurs across the country to provide clarity and peace of mind. We guide and support them to realize their business and personal goals.

Tim Bromelkamp

Tim Bromelkamp

Government Business Development Consultant

An experienced business development consultant who has helped position businesses and other organizations to sell their products or services to the U.S. Department of Defense, other federal agencies, and industry.  

Jan Lorant

Jan Lorant

Non-Executive Director

President and Lead Designer for Gabor Lorant Architects, a firm that has provided architectural and engineering services to federal, state and municipal entities in 38 states and 3 countries throughout its 56-year history. With over 30 years of experience, Mr. Lorant has a thorough understanding of all aspects of design and construction of complex buildings and structures including large industrial facilities, redundant and resilient public safety centers as well as college/university research buildings.

Mark Keenan

Mark Keenan

Non-Executive Director

Co-founder and Chairman of KHS&S, one of the largest design-assist building companies in the world. More than 35 years of experience performing nearly every facet of construction, ranging from field operations supervision to senior executive management. 

Marc Hellmann

Marc Hellmann

Advisory Board Member

Marc Hellmann is the CEO of HANSA-FLEX South Africa, a division of HANSA-FLEX International, Germany. The group’s business activities span 40 countries worldwide and specialize in Fluid Technology. Marc is a global entrepreneur and businessman currently serving on the Board of Directors of various companies throughout the U.S., Africa, Germany and Australia.

Dr. Avi Wiezel

Dr. Avi Wiezel

Advisory Board Member

Avi Wiezel currently serves as the assistant dean at Ira A. Fulton Schools of Engineering (Arizona State University) and is an associate professor in the School of Sustainable Engineering. Dr. Wiezel held several managerial positions within construction and engineering firms throughout Europe and the Middle East.


Global Air Cylinder Wheels (GACW)
Nov 24, 2022
$10k - $1.64M
Common Stock
Common Stock

Maximum Number of Shares Offered subject to adjustment for bonus shares

*Maximum number of shares offered subject to adjustment for bonus shares. See Bonus info below.

Voting Rights of Securities Sold in this Offering

Each Subscriber shall appoint the Chief Executive Officer of the Company (the “CEO”), or his or her successor, as the Subscriber’s true and lawful proxy and attorney, with the power to act alone and with full power of substitution, to, consistent with this instrument and on behalf of the Subscriber, (i) vote all Securities, (ii) give and receive notices and communications, (iii) execute any instrument or document that the CEO determines is necessary or appropriate in the exercise of its authority under this instrument, and (iv) take all actions necessary or appropriate in the judgment of the CEO for the accomplishment of the foregoing. The proxy and power granted by the Subscriber pursuant to this Section are coupled with an interest. Such proxy and power will be irrevocable. The proxy and power, so long as the Subscriber is an individual, will survive the death, incompetency and disability of the Subscriber and, so long as the Subscriber is an entity, will survive the merger or reorganization of the Subscriber or any other entity holding the Securities. However, the Proxy will terminate upon the closing of a firm-commitment underwritten public offering pursuant to an effective registration statement under the Securities Act of 1933 covering the offer and sale of Common Stock or the effectiveness of a registration statement under the Securities Exchange Act of 1934 covering the Common Stock.

Investment Incentives*


Friends and Family - First 48 hours | 15% bonus shares

Super Early Bird - Next 5 days | 10% bonus

Early Bird Bonus - Next 7 days | 5% bonus shares

Amount Based:

• USD 5,000 investment, 5% bonus shares 

• USD 10,000 Investment, 7% bonus shares

• USD 20,000 Investment, 10% bonus shares

• USD 50,000 Investment, 12% bonus shares

• USD 100,000 Investment, 15% bonus shares

*All perks occur when the offering is completed.

The 10% StartEngine Owners’ Bonus

Global Air Cylinder Wheels will offer 10% additional bonus shares for all investments that are committed by investors that are eligible for the StartEngine Crowdfunding Inc. Owner's bonus.

This means eligible StartEngine shareholders will receive a 10% bonus for any shares they purchase in this offering. For example, if you buy 100 shares of Common Stock at $2.24/ share, you will receive and own 110 shares for $224. Fractional shares will not be distributed and share bonuses will be determined by rounding down to the nearest whole share.

This 10% Bonus is only valid during the investors eligibility period. Investors eligible for this bonus will also have priority if they are on a waitlist to invest and the company surpasses its maximum funding goal. They will have the first opportunity to invest should room in the offering become available if prior investments are canceled or fail.

Investors will receive the highest single bonus they are eligible for among the bonuses based on the amount invested and time of offering elapsed (if any). Eligible investors will also receive the Owner’s Bonus in addition to the aforementioned bonus.

Irregular Use of Proceeds

The Company might incur Irregular Use of Proceeds that may include but are not limited to the following over $10,000: Vendor payments. Salary payments made to one’s self, a friend or relative.


Article Image
Tyre Press

Global Air Cylinder Wheels introduces OTR tyre replacement

Article Image
Engineering & Mining Journal

Truck Innovation Show Shape of Things to Come

Article Image
Phoenix Business Journal

Chandler-based Global Air Cylinder Wheels raises $2.5M to further develop eco-friendly alternative to rubber tires

Article Image
New Power Progress

Article Image
Sustainability Magazine

Reinventing the wheel in an evolving industry


Owners bonus
Stack Owner's Bonus & Rewards!

Members get an extra 10% shares in addition to rewards below!


Multiple investments in an offering cannot be combined to qualify for a larger campaign perk. Get rewarded for investing more into Global Air Cylinder Wheels (GACW).




Joel Hoffman

a year ago

I bought into GACW last time and am just chillin' with my position for now. But here's a good sign for us: It seems that the likes of Bezos and Gates will be going after cobalt and nickel on a huuuuuge scale in greenland. They will not want to pollute with dirty tires. Just a thought. I'm not hyping GACW, but for me it's a worthwhile risk. Good luck to everybody. --Joel




Jared Miles

a year ago

I'm reinvesting. Even if I take a pessimistic view, the valuation still makes more than enough sense (i.e. up to $75k for one tire goodness gracious I don't even make that much in a year, the competitive moat with rapid product improvement/patent, rate of growth in general, etc.). Also, I greatly appreciate your insightful answers and respect for all of the potential investors from the last round (even the rude naysayers). By any chance, is there some visual (drawing or video) of replacing the tread because I think that is one of the underrated advantages to GACW.



Carmelia Matsko

8 days ago

GACW is a company that I expected to hear more from, most of the responses are at least 8 months ago.



Andrew Jordan

7 months ago

Hello, Did GACW receive the $1,000,000 license payment?



Larry Romey

7 months ago

I'm a GACW investor and the silence is hard to endure. When will an update on testing, production, outcomes, and company updates be available?



Joel Hoffman

7 months ago

Dr. Kemeny, GACW, and Investors: Just caught an interesting article. Link below. As the electric vehicle industry becomes more competitive, looks like companies will have to protect their supply lines of critical minerals. As Tesla and other EV manufacturers buy mines, the onus will fall to them to mine in as eco-friendly a manner as possible. Once they own a mine, no longer will they be able to say, “Yeah, we know those rubber tires are highly pollutive, but we can’t control the mining industry.” Plus, it is more likely that EV manufacturers will have the capital to adopt our wheel. Mining with GACW would be a nice boost to Elon Musk’s brand! He would mention it right away on Joe Rogan! Best to all, Joel



Kurt Wickham

7 months ago

How is 2023 looking so far for GACW? Very excited about the business and the future with you guys!



Larry Romey

8 months ago

How did the yearly kick-off meeting go?



Larry Romey

8 months ago

Does GACW have active testing in progress or planned? What are they? Are there product testing requirements that have to be met before production approval is garnered? Is a GACW future IPO being considered? Is a third CF raise on SE being contemplated?



Larry Romey

10 months ago

GACW has really sparked my interest in this startup and technology. For a regular guy, I've invested a fair amount. With this round closed, I would really like to be kept abreast of business developments and progress. I follow your FB and Instagram accounts, but it seems there's little new information there. Have you all considered a weekly or bi-weekly update? What about a newsletter that investors can subscribe to?




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