In this study, we try to optimize the seat performance by analyzing the pressure distribution on the seating surface of high performance vehicle seat. The mechanical relationship between an occupant and a seat is established in consideration of the human body segmentation method and the driving characteristics of a high-performance vehicle, and the physical properties for several regions of a seat is measured through the three-dimensional image analysis. The measured mechanical properties are applied to the high performance vehicle seat simulation to analyze the body pressure distribution and to present criteria for seating surface segmentation. Based on the segmentalized criteria, we develop a seat sensor system that can measure the body pressure in real time and experimentally explore the pressure distribution on a seat due to occupants.