The application note details the use of the PerkinElmer Pyris TGA 9 Thermogravimetric Analyzer for analyzing tire rubber, adhering to the ASTM D6370 standard. It involves assessing various components such as organics, carbon black, and fillers within tire samples. Key findings demonstrated variances in organic, carbon, and ash content between different tire parts (tread and sidewall) and brands, highlighting the impact of composition on tire performance and durability. The analysis not only quantifies these constituents but also provides insights into thermal degradation behavior, suggesting further investigative potential with techniques like FTIR spectroscopy or GC/MS for gas evolution analysis. The application note underscores the Pyris TGA 9's capability in delivering both standard compliance and in-depth material understanding.