<p>As critical components in vehicle dynamics systems, tires directly influence handling performance and safety. Comprehensive analysis of the tire shaping process provides essential guidance for tire design optimization. In this study, a three-dimensional (3D) finite element model is developed using experimentally validated two-dimensional (2D) simulation results of the building process. Subsequently, a visco-hyperelastic constitutive model based on the Yeoh model and three parallel Maxwell elements is adopted to characterize uncured rubber mechanical behavior. Full-process simulations encompass the tire positioning, shaping, mold closing, and curing stages. Model validation results demonstrate that the maximum strain rate in the simulation is 0.024s^-1, which falls within the experimentally defined range. Additionally, the maximum deviation between the simulated cross-sectional profiles and those of actual tires is 8.93%, confirming the reliability of the simulation model. Based on this model, the study further examines the influence of mold segmentation quantity on tire uniformity. Simulations employing an idealized state (non-segmented), as well as 10-block and 16-block segmentation, demonstrate that an increased number of mold segments leads to improved tire uniformity, approaching the performance observed under the idealized state.</p>