[jwade944]

The two yellow dots indicate a spring rate of 21.8 N/mm (1 N/mm = 5.71 lb/in) The wire diameter is 12.0 mm. The free length is 396 mm. The spring force is 3118-3202 N at 251 mm compression. These are the middle tolerance springs - between the standard and M030 groups. Porsche made each group of springs the same and then placed each spring into a tolerance group based on tests. These struts and springs were offered as the M474 option on the 944S and the springs were standard on the 1986 through 1988 951.