Monitoring quality goals through lean Six‐Sigma insures competitiveness

Purpose – This case seeks to illustrate the specific problem of excessive defects in radial tyres produced in a renowned tyre manufacturing company in India. This paper aims to show how lean Six‐Sigma methodology can be used to tackle the specific issues like defects reduction. Design/methodology/approach – The management took this problem on top priority as it is eroding their brand value and financial performance. A Mumbai‐based lean Six‐Sigma consulting group was approached to tackle the issue. One of the authors, who is pursuing research on determinants of successful lean manufacturing implementation in Indian industries, joined this project as a part of his field study and he spent considerable time in discussing and observing the issue with people of different hierarchical levels of the company. Lean Six‐Sigma methodologies were incorporated and the problem was evaluated with root‐cause analysis. This case is formulated on the basis of the initial findings of the study in an Indian tyre manufacturing organisation keeping the actual name of the company in disguise. Findings – On the basis root‐cause analysis of the radial tyre manufacturing process, it was found that presence of foreign particles in the manufacturing environment, under‐ageing and over‐ageing of tyre components, and inefficient bead winding process, were the main culprits of defects. It was confirmed that lean Six‐Sigma methodology can serve as a major tool to reduce defects in the tyre manufacturing process in India. Originality/value – This paper provides some key insights to the successful adoption of lean Six‐Sigma tools in an Indian industrial environment, where lean practices are still in the very nascent stage and very little literature is available in this context.