A hydraulic drive and method for controlling such a drive includes two drive motors configured to be controlled by at least one continuously adjustable distribution valve. One surface of the fiber layer is treated with pigment particles. The tire pressure is then estimated at the second tire temperature and the estimated tire pressure is compared to the second tire pressure. The main-control-terminal electronic control module is configured for assigning one of the electronic control modules to be the assembling electronic control module, and assigning the rest of the electronic control modules to be the detecting electronic control module. Therefore, surfaces of the casting rolls may be less damaged by foreign objects. A first region where the crystal grain size is relatively small and a second region where the crystal grain size is relatively large are respectively formed in at least one place.