Development and Standardization of a Compensation Method for Measurement Equipment Effects to Improve Blocked Force Accuracy in Physical Tires

Although the tire system is not developed in-house but supplied by tire manufacturers, it is a critical component that significantly affects overall vehicle performance, including NVH. To ensure the supplied tires meet vehicle performance targets, our company provides detailed development guidelines, defining block force—closely related to road noise—as a key NVH performance index. As virtual tire development is introduced, manufacturers will submit block force data from virtual models with initial tire designs, enabling early prediction of tire and vehicle-level performance. However, this approach is still under evaluation, with unresolved challenges such as the absence of clear block force target-setting methods and limited accuracy in current virtual evaluations. To address this, we propose using block force measurements from mass-produced or prototype tires as a basis for data-driven target setting and as a reference to enhance virtual model accuracy. Since block force data is sensitive to test equipment characteristics, we collaborated with three major domestic tire manufacturers to standardize equipment, procedures, and post-processing methods. These standards were incorporated into our internal engineering specifications, allowing systematic accumulation of reliable physical tire-based data. Despite this, equipment variability remains. To mitigate it, we developed a post-processing compensation method that removes equipment-specific effects without additional testing or reduced efficiency. This enables accurate block force data, validated even in the rumble frequency range, using existing equipment. We plan to update the ES with this compensation and post-processing process to ensure improved data quality from tire suppliers.