Final answer:
The TMC method requires that endplay for wheel bearings be between 0.001-0.005 inch for optimal performance and to prevent premature wear or failure.
Step-by-step explanation:
When using the TMC method of adjusting wheel bearings, endplay must be within the range of 0.001-0.005 inch. This precise setting is crucial to ensure that the wheel bearings operate correctly, providing enough room for expansion due to heat without becoming loose. Adhering to this specification minimizes wear and prevents premature failure.