Abstract: An integrated system for measuring and correcting rubber tires for forces generated by dynamic non-uniformities and for measuring and marking both sides of the tire for lack of symmetry. The force measurements are fed to a computer and the forces indicative of dynamic non-uniformities correlated to given angular positions on the tire by means of a pair of transmissions which act as a shaft encoder, the transmissions incorporating computer controlled timing discs which act through an hydraulic controller to control the honing mechanism which cuts the outside periphery of the tires at the proper locations and in the proper amounts to reduce the non-uniformities to an acceptable low level. Computer control means are also provided to revolve the tires to the proper positions for the marking of their side walls to indicate points of maximum unbalance so that corrective measures may be thereafter taken to correct the tires for lack of symmetry.