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In the past, each noise shim supplier had its own specifications to describe the properties of their noise shims (often also called as shim or damping shim). Due to that, it was difficult to compare the physical properties of noise shims from different suppliers. The main task was to define common specifications for daily quality/development tests. Traceability in prototype status and production was introduced establishing a clear declaration of noise shim deliveries with batch no. and “use by” date. Harmonization was created through standardized tests and procedures. In addition, a common noise shim database for all noise shim manufacturers was established. A more realistic compressibility test was developed to estimate the additional compressibility of noise shims based on bare pads under cold and hot conditions. These values are important to describe the axial decoupling at low pressure and the maximal displacement at high forces.