An apparatus for preparing conditions under which a rim-assembled tire is fixed to a vehicle and conditions under which balance is optimized, the apparatus comprising:
- storage means for storing information about a plurality of tires and wheels;
- display means for displaying the information about the plurality of tires and wheels stored in the storage means;
- input means for inputting information for selecting a tire and a wheel from among the tires and wheels displayed on the display means and information about a customer's driving preference;
- and
- preparing means for preparing, for the selected tire and the wheel, conditions under which a tire and a rim is assembled, conditions under which unbalance is adjusted, conditions under which a rim-assembled tire is fixed to a vehicle and conditions under which alignment is adjusted, based on the information for selecting a tire and a wheel and information about a customer's driving preference input from the input means.