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Michelin Casing Technologies:
Built for Strength, Efficiency, and Longevity


The casing is the backbone of your tire – the foundation that determines its durability, retreadability, and performance in demanding conditions. Michelin’s advanced casing technologies combine premium materials, innovative design, and proven engineering to extend service life, reduce operating costs, and support sustainability. On this page, you’ll discover our six leading casing innovations, how they work, and the benefits they bring to your fleet.

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Casing Technologies at a Glance

Click on the name of the technology below to learn more about it and discover the Michelin tires that have the technology integrated.

Technology
Primary Benefit
Ideal Applications

B2

Wider bead for improved service life

Mining, construction

Duracoil

Reinforced bead stability

Long-haul trucking

Duracore

Exceptional durability and up to 4 retreads

Long-haul trucking

Infinicoil

Continuous steel wrap for stability & efficiency

Freight, passenger transport

NRF

Impact resistance

Underground mining

Opticoil

Reduced material use

Sustainable fleets

Powercoil

Stronger steel cables for endurance

Freight, passenger transport

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B2 TECHNOLOGY

 


What is Michelin B2 Technology?

MICHELIN B2

MICHELIN B2

The exclusive B² technology from Michelin makes the bead area more robust and therefore designed to increase the service life of the tires in mines and quarries, but also in construction and handling operations. Tires with this technology have a wide metal bead wire that increases the area in contact with the rim. The strength of the bead area is enhanced and there are fewer rotations on the rim.


What are the Benefits of B2  Technology?

PRODUCTIVITY

The 30% wider bead bundle and contact area improves the clamping force to the wheel and pressure distribution, allowing up to 20% more torque* through the tire/rim interface.

LONGEVITY

Strong durability of the bead zone provides greater endurance in high torque, heavy load applications, helping you reduce operating costs and limit waste and raw materlal usage

RELIABILITY

The optimized  and reinforced bead design helps increase total tire life and uptime, while also improvingthe angle and contact points of the bead during the mounting process.


Michelin Tires Featuring B2 Technology

Michelin B2 technology is mostly integrated in loader tires.

MICHELIN
X MINE D2 Extra Load
More Load(1), A Tougher Tire(2)
See Tire
MICHELIN
X UM HAUL
PRODUCTIVITY UNDER HEAVY HAULS
See Tire
MICHELIN
XTXL (Construction)
With exceptional load capacity and maximum tire life, the Michelin XTXL tire is engineered to strengthen your productivity. It offers outsanding durability that provides the comfort and safety your operator needs to get the job done.
See Tire
Explore Other Casing Technologies
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DURACOIL TECHNOLOGY

 

 

What is Michelin DURACOIL Technology?

To enhance durability, the Michelin DURACOIL technology introduces a reinforced zone between the tire and the wheel. Our premium nylon material protects the bead structure, enhancing bead stability during driving and maximizing the potential mileage of the casing.

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What are the Benefits of DURACOIL Technology?

DURABILITY

Michelin DURACOIL technology enhances tire durability throughout its life - whether it's the first life, second, or third - enabling longer use and conserving raw materials, particularly through retreading.

PEACE OF MIND

With DURACOIL, you gain improved bead stability for a smoother ride on the road.

 

Michelin Tires Featuring DURACOIL Technology

MICHELIN
X® COACH Z
Designed with safety, grip and performance at the forefront for coach and bus* fleets operating in regional and line haul environments.
See Tire
MICHELIN
X® MULTI HL Z
Designed to optimize durability and mileage performance in high load regional construction, bulk and tanker operations.
See Tire
Explore Other Casing Technologies
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DURACORE TECHNOLOGY

 

 

What is Michelin DURACORE Technology?

Michelin DURACORE casings combine two exclusive Michelin technologies: INFINICOIL and POWERCOIL. With this unique combination, Michelin DURACORE casings are designed to support up to four retreads, offering exceptional durability and value for fleets.

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What are the Benefits of DURACORE Technology?

DURABILITY

By combining the stability of Michelin INFINICOIL technology in conjunction with the strength and endurance of Michelin POWERCOIL technology in the body ply, tires with innovative Michelin DURACORE casings are built to go the distance. The result is casings that deliver durability you can count on and confidence in your daily fleet operations.

TOTAL COST OF OWNERSHIP

Casings with this technology are designed for extended mileage potential, helping reduce the frequency and cost of tire replacements. They also deliver efficiencies across multiple lives, with optimized mileage and fuel performance that help lower your total cost of ownership.

SMART SAVINGS

By extending the life of your casings, this technology helps you buy fewer tires over time, reducing waste while keeping costs under control. Each replacement avoided reduces material waste and supports efficiency across your operations.

 

Michelin Tires Featuring DURACORE Technology

MICHELIN
X® LINE ENERGY™ Z+
A long haul steer tire with a casing so durable it’s designed to reach up to 1 million miles with up to 4 retreads.
See Tire
MICHELIN
X® LINE ENERGY™ D+
Michelin’s most fuel efficient(1) dual Drive tire, the X® LINE ENERGY™ D+ features a casing designed to reach up to 1 million miles with up to 4 retreads.
See Tire
MICHELIN
X LINE GRIP D
A drive tire that provides exceptional mileage, lasting traction and features a casing so durable it’s designed to reach up to 1 million miles with up to 4 retreads.
See Tire
Explore Other Casing Technologies
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INFINICOIL TECHNOLOGY

 

 

What is Michelin INFINICOIL Technology?

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A continuous steel wire up to 400 meters long is wrapped around the tire to enhance its stability over its lifespan. The tire's increased durability at higher load capacities or under more demanding conditions results in enhanced fuel efficiency and greater casing mileage potential.

 

What are the Benefits of INFINICOIL Technology?

ENERGY EFFICIENCY

Enhanced stability provides lower deformation and heat dissipation, meaning you consume less fuel.

CASING DURABILITY

Michelin INFINICOIL reinforces the tire casing, increasing its durability, so much so that it can be retread multiple times.

LONGEVITY

With enhanced casing mileage potential, you can go further for your business and the planet.

 

Michelin Tires Featuring INFINICOIL Technology

MICHELIN
X® COACH Z
Designed with safety, grip and performance at the forefront for coach and bus* fleets operating in regional and line haul environments.
See Tire
MICHELIN
X® MULTI HL Z
Designed to optimize durability and mileage performance in high load regional construction, bulk and tanker operations.
See Tire
Explore Other Casing Technologies
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NRF TECHNOLOGY

 

 

What is Michelin NRF Technology?

Michelin NRF technology is designed for aggressive conditions such as rocks and debris, that is unique to underground mining.

The NRF technology provides a resistance to these harsh conditions through:

  • Two additional plies added to the tire structure which contain nylon cords cross-woven throughout the rubber for more resistance and durability.
  • New cables in the working plies for enhanced resistance to impacts and give the right protection against oxidation.
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What are the Benefits of NRF Technology?

DURABILITY

This technology enhances the tire's durability, improving impact resistance and protecting against oxidation.

LONG-LASTING RELIABILITY

With more resistance and durability,  have peace of mind in the extreme conditions of underground mining.

LESS DOWNTIME

Tires with NRF technology are designed to require less maintenance time because of their durability.

 

Michelin Tires Featuring NRF Technology

Discover Michelin mining solutions featuring NRF tire technology made for underground mining:

MICHELIN
X MINE D2 Extra Load
More Load(1), A Tougher Tire(2)
See Tire
MICHELIN
XSM D2+
The underground mining loader tire for extreme conditions
See Tire
MICHELIN
XMINE D2 PRO
Designed for extreme underground mining and quarry conditions. It offers improved aggression resistance and reduced downtime, thanks to new cables and NRF technology. The tire also boasts an increased load capacity of up to 18% and enhanced tire life due to optimized compounds.
See Tire
Explore Other Casing Technologies
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OPTICOIL TECHNOLOGY

 

 

What is Michelin OPTICOIL Technology?

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OPTICOIL is a new patented Michelin technology for improved material efficiency. The layout and composition of the materials in the bead area have been completely reworked, offering a thinner design and distinctive curve and allowing for less tire mass but the same durability. OPTICOIL is usually combined with DURACOIL technology for bead area reinforcement and improved robustness.

 

What are the Benefits of OPTICOIL Technology?

DECREASED RAW MATERIAL CONSUMPTION

OPTIMIZED GLOBAL PAYLOAD

With this new technology, between 1.5 lbs and 3.3 lbs of raw materials are saved per tire, no matter the position or dimension.

 

Michelin Tires Featuring OPTICOIL Technology

MICHELIN
X® MULTI ENERGY™ Z2
Challenging the traditional trade off, and setting new standards, in fuel efficiency, traction and mileage performance for super regional and regional applications.
See Tire
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POWERCOIL TECHNOLOGY

 

 

What is Michelin POWERCOIL Technology?

A new generation of high-strength steel cables infused with rubber enhance casing endurance and casing mileage potential, while reducing rolling resistance. The unique way in which we apply rubber to our cables significantly extends their life by shielding them from air, water, and friction. 

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What are the Benefits of POWERCOIL Technology?

DURABILITY

Resistant to distortion and damage, casings with Powercoil technology are designed to last longer and be retread multiple times.

LOWER ROLLING RESISTANCE

The light weight of our high-strength steel cables and the resistance to deformation allow you to reduce your carbon emissions.

REDUCED ENVIRONMENTAL IMPACT

Retreading helps you to save raw material and lower costs, while lower resistance tires allow you to reduce your environmental impact on the road.

 

Michelin Tires Featuring POWERCOIL Technology

Want to equip your freight or passenger transportation vehicles with tires integrating the Michelin POWERCOIL technology? 

MICHELIN
X® COACH Z
Designed with safety, grip and performance at the forefront for coach and bus* fleets operating in regional and line haul environments.
See Tire
MICHELIN
X® LINE ENERGY™ Z
Our best just got better. The Michelin X® LINE ENERGY™ Z tire is guaranteed to deliver 20% more mileage vs. leading competitor line haul steer tires* and 5% better rolling resistance than the Michelin XZA3+ EVERTREAD tire** it replaces.
See Tire
MICHELIN
X® MULTI T2 - 17.5
The highway trailer radial optimized for low bed, high cube trailer operations in regional applications.
See Tire
MICHELIN
X ONE LINE GRIP D
Michelin X One drive tire for long haul and regional applications with grip that weathers the elements. Over 25% better snow traction than leading competitive tires.*
See Tire
MICHELIN
X LINE GRIP D
A drive tire that provides exceptional mileage, lasting traction and features a casing so durable it’s designed to reach up to 1 million miles with up to 4 retreads.
See Tire
Explore Other Casing Technologies

FREQUENTLY ASKED QUESTIONS ABOUT
MICHELIN CASING TECHNOLOGY

Why is casing technology important for fleets?

The casing forms the structural foundation of the tire. A stronger casing improves durability, supports multiple retreads, and helps reduce downtime, all of which contribute to lower operating costs for fleets.

How does casing technology affect retreadability?

High-quality casings maintain their shape and strength through multiple service cycles. Michelin’s casing innovations are engineered to preserve structural integrity, allowing many tires to be retreaded more than once for extended value.

Which Michelin casing technology is best for extreme conditions?

For the harshest environments, such as underground mining, NRF Technology offers multiple layers of reinforced nylon cords to resist impacts, cuts, and abrasion. Other solutions, like B2 and Duracoil, also provide enhanced robustness for heavy-duty use.

How can casing innovations reduce operating costs?

Advanced casing designs reduce premature failures, improve fuel efficiency, and extend tire life. These benefits help fleets get more service hours from each tire and reduce the need for replacements, lowering the total cost of ownership.

Are Michelin casing technologies compatible with all tire types?

Each technology is designed for specific tire applications, from long-haul trucking to mining and agriculture. Many innovations are available across multiple Michelin tire lines, ensuring fleets can match the right casing technology to their operational needs.

Want to know more about other Michelin technologies?
Learn About Michelin Technologies
LEGAL MENTIONS
*Internal study compared with standard Michelin tires. Specific values according to size.

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