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Brake pad compressibility is a parameter which is commonly utilized within the braking industry for design and production considerations. With a number of procedures relying on the accurate measurement of this metric, Greening Testing Laboratories, Inc. undertook to examine the extent to which different intrinsic or extrinsic factors may affect these measurements. This paper is a status update on continuing efforts by our laboratory in this area, first reported in early 2022. The primary goal of this study was to measure how brake pad compressibility changed as a function of the environmental humidity in which they were stored in prior to testing, due to the absorption of moisture. To properly evaluate these deviations, it was also necessary to evaluate and compensate for how compressibility values may change over the course of repeated testing due to material characteristics alone - a parameter which may be of significance in its own right.