Case Detail

Case Summary

Six Sigma Quality at Flyrock Tires

Case Number: 5-104-004, Year Published: 2004

HBS Number: KEL028

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Authors: Sunil Chopra

Key Concepts

Statistical Process Control, Six Sigma Quality


The case assumes an understanding of statistical process control (SPC) and focuses on highlighting why Six Sigma quality is useful. In particular, it takes the issue of a bearing being worn out at a tire manufacturer leading to a mean shift (while producing defectives). In contrast, it is shown how a Six Sigma process would quickly detect the mean shift while producing hardly any defectives. The case may be used to introduce the methodology of statistical process control but is best used to illustrate the value of Six Sigma after students have understood SPC.

Number of Pages: 3

Extended Case Information

Teaching Areas: Operations

Teaching Note Available: Yes

Geographic: United States

Industry: Tire Manufacturing

Organization Name: Flyrock Tires

Organization Department: Quality Control

Organization Size: Medium

Decision Maker Position: VP Quality

Decision Maker Gender: Female

Year of Case: 2002