Goal

Phase 1 of the project establishes the research design of the much larger Phase 2. Together, both projects evaluate the dynamic (in motion) weight distribution of loads on vehicle tires. In addition, the project compares the new and retreaded tires and creates a data repository of 2 years of the “life of a CMV tire” in the real world.

Summary

The collective Phase 1 and Phase 2 of the project evaluates tire use and abuse over a 2-year period which includes dynamic weight distribution, tire pressure, temperature, and location. Phase 1 specifically establishes the research design elements and locates ancillary support mechanisms for Phase 2 (e.g., embedded sensor choice, data collection methods, tire suppliers, tire service agencies, etc.).

Impacts

Phase 1 of this project informs and supports the full project in Phase 2. The overall expectations for both phases are: a) clearer understanding of factors that lead to tire failure; b) creation of a data set for the use of a statistically significant (most likely 1200) tires while in use on CMVs across the nation and under varying conditions; c) significant insight into the dynamic weight shifting of loads on CMV tires under normal operating conditions; d) knowledge of the extent of tire use and potential abuse in fleets; and e) evaluation of tires that experience periods of excessive loading or decreased air pressure while in use. Knowledge of these factors can inform inspection criteria and rulemaking as well as drive innovation in tire design and tire inflation technologies.