Suspension System

A suspension system performs calculations using machine learning by making sensor information and suspension state information associate with each other. The suspension system includes: a weight parameter storage unit; a vehicle state estimation unit; a first vehicle behavior calculation unit that calculates a first physical value based on the estimation result; a second vehicle behavior calculation unit that calculates a second physical value based on the sensor information; an estimation accuracy verification unit that outputs estimation accuracy of the state of the suspension by comparing the first physical value and the second physical value to each other; and a traveling data control unit that instructs learning of weight parameters based on an output result of the estimation accuracy.