Improving Process Cycle Efficiency in SNI-Certified Tire Testing Through Lean Manufacturing and Value Stream Mapping Approach

This study aims to improve the efficiency of the tire testing process at PT XYZ through the application of the Lean Manufacturing approach using the Value Stream Mapping (VSM) method. A quantitative descriptive approach with a case study was employed. Data were collected through direct observation, interviews, and documentation of the tire testing process. The current state mapping revealed the presence of non-value-added activities that led to time and resource waste. After implementing improvements using the future state map, the efficiency of the testing process increased by 38%. These findings indicate that VSM is effective in identifying and eliminating waste, thereby enhancing process efficiency. This research provides practical contributions to testing laboratories and supports the achievement of SDG 9 by improving the quality of testing infrastructure.