Abstract: Systems (100) and methods (200) are provided for estimating at least a load acting on a vehicle-mounted tire (122). In an embodiment, tire-mounted sensor (118) generates output signals corresponding to at least tire inflation pressure and footprint length. A linear model between load and footprint length for the tire is retrievably stored (214, 224), along with derived model coefficients as a function of at least sensed tire inflation pressure. Local controller (102), remote server (130), or other computing device (140) is linked to tire-mounted sensor and data storage (106, 134), and further configured to estimate the load (230) acting upon the tire from the linear model, based on at least footprint length, sensed tire inflation pressure, and the derived model coefficients (222), and to generate an output signal corresponding to the estimated load (240) for display (242, 244), wear detection (246), traction detection (248), or other control functions.