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  1. Home
  2. Verified Technologies for SmartWay and Clean Diesel

Requirements for SmartWay Verification of Low Rolling Resistance (LRR) Tires and Retread Technologies for Tractors or Trailers

  • Overview
  • Requirements
  • Contact Info
  • Application & Testing
  • Evaluation

Before applying for SmartWay verification of your LRRs, consider the following:

On this page:
  • Guidance for tire size
  • Considerations for tire and retread models with multiple tread depths
  • Performance requirements
  • Testing requirements
  • Laboratory requirements for testing
  • Requirements for the applicant
  • Requirements for availability of equipment

Guidance for tire size

For guidance for new tire size, please see: Tire Size Guidance page.

Considerations for tire and retread models with multiple tread depths

Tire casing for testing (“test casing”): The test casing shall be made from any new-unused SmartWay verified casing dual size 295/75R22.5 or 275/80R22.5 load range G or size 445/50R22.5 load range L (single-wide casing). Other sizes and load ranges must be approved by EPA in advance.

If the tread depth tested is the deepest tread depth, the entire product line of the model with different tread depths qualifies for verification.

If the test results are submitted for one of the shallower tread depths, only the models with the shallower tread depths will be verified.

Performance requirements

For information on new tire performance requirements, please see:
  • Performance requirements for verifying LRR tires under the SmartWay Program
For information on retread tire performance requirements, please see
  • Performance requirements for verifying LRR retread technologies under the SmartWay Program

Testing requirements

There is no charge for verification, but the manufacturer is responsible for the costs of testing.

Tests must include a sample of three tires for each tire model ("pattern").

Laboratory requirements for testing

The laboratory conducting the tests must:
  • Be accredited by a body recognized by the International Laboratory Accreditation Corporation (ILAC) to be in compliance with ISO 17025 for the SAE J1269/ISO28580 test methods
  • Provide a copy of the laboratory's accreditation certificate (in English translation, if necessary) with every set of lab report.
  • The laboratory must provide data showing that their results are aligned to an accredited laboratory OR
  • EPA may accept alternative evidence of laboratory competence and quality assurance/quality control by prior arrangement.

Requirements for the applicant

Tire manufacturers may apply for verification.  

The following information must be provided in the application:
  • The relationship between the applicant and the manufacturer; and
  • The name and location of the manufacturing facility.

Requirements for availability of product

Tires and retread products submitted for verification must be commercially available for installation. No products still in the research and development stage will be verified. However, we will verify tire models and retread products whose market launch is imminent.

Verified Technologies for SmartWay and Clean Diesel

  • Clean Diesel Technology
    • Learn About
    • Verified List
    • Verification Process
    • Manufacturer Contact List
  • SmartWay Technology
    • For Trucks & School Buses
      • Designated Tractors
      • Designated Trailers
      • Refrigerated Trailers and TRU Calculator
      • Aerodynamic Devices
      • Idling Reduction
      • Tires
    • For Locomotives
    • For Marine Technology
Contact Us about Verified Technologies for SmartWay and Clean Diesel
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on December 31, 2024
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