There is provided a system and method for quantitative analysis of a cause
of tire trouble capable of quantitatively analyzing whether the tire
trouble is caused by the tire itself or in a matter of harshness of a
tire using condition in light of not only a force acting on a tire
mounted on a running vehicle but also harshness of a tire using condition
such as a traveling speed of the vehicle, level difference of a road
surface, a curve and gradient information. The method for quantitative
analysis of a cause of tire trouble according to the present invention is
characterized by comprising the steps of receiving positional data of a
running vehicle from the GPS, simultaneously measuring triaxial
accelerations which are accelerations acting on the running vehicle in
back-and-forward, right-and-left and up-and-down directions while time
synchronizing with the received data, quantitatively analyzing harshness
of a tire using condition from the received positional data and the
triaxial acceleration data, and displaying an analysis result.