The present invention is in the field of plasma display panel filters, and more specifically the present invention is in the field of multiple layer plasma display panel filters having a PVB layer. The coil includes a knee coil section and a footankle coil section. Further, a loading sensitivity-calculating method of determining the loading sensitivity of the dynamic load radii of tires includes steps of: determining a lateral acceleration during turning of a vehicle, determining the shift rate of a judgment value which is the relative comparison of rotational speed of wheels on a pair of diagonals of a vehicle, and determining the loading sensitivity.