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The “TR” rim, also known as the “Tweel” rim, is a unique type of wheel developed by Michelin that incorporates both tire and wheel components into a single unit.


  1. Integration of Tire and Wheel: Unlike traditional pneumatic tires mounted on separate rims, the TR rim combines both tire and wheel components into a single unit.
  2. Flexible Spokes: Instead of the rigid sidewalls found in conventional tires, the TR rim features flexible spokes that radiate outward from the hub to the outer rim.
  3. Flat Rim Flange: The rim flange of the TR rim is flattened, which allows for better stability and durability, particularly in heavy-duty applications.
  4. Run-Flat Potential: The design of the TR rim offers run-flat potential, meaning that even if a portion of the tire becomes damaged or punctured, the wheel can still support the vehicle’s weight and maintain mobility for a limited distance.


  1. Puncture Resistance: The absence of pneumatic air chambers in the TR rim reduces the risk of punctures and blowouts, making it more resistant to damage from road hazards.
  2. Durability: The flexible spokes and flattened rim flange contribute to the overall durability and longevity of the TR rim, particularly in rugged or off-road conditions.
  3. Stability: The integrated design of the TR rim provides enhanced stability and handling characteristics compared to traditional tires, particularly at high speeds or under heavy loads.
  4. Ease of Maintenance: The absence of air pressure means that there is no need for regular inflation or pressure monitoring, simplifying maintenance requirements.


  1. Commercial Vehicles: The TR rim is well-suited for use in commercial vehicles, such as trucks, buses, and industrial equipment, where durability, puncture resistance, and reliability are crucial.
  2. Off-Road Vehicles: The rugged construction and run-flat potential of the TR rim make it suitable for use in off-road vehicles, such as utility vehicles, agricultural equipment, and military vehicles.
  3. Specialized Applications: The TR rim may also find applications in specialized vehicles and equipment where traditional pneumatic tires may be prone to damage or failure.

The TR rim, developed by Michelin, is a unique type of wheel that integrates tire and wheel components into a single unit. Its flexible spokes, flattened rim flange, and run-flat potential offer advantages in terms of durability, puncture resistance, and stability, making it suitable for a wide range of commercial, off-road, and specialized applications.

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