. MAINTENANCE SERVICE PROCEDURE PRECAUTIONS WHEN REPLACING TIRE After tightening hub bolts (1) when replacing the tire, travel for 5 to 6 km, tighten the bolts again to settle all the contacting parts. In particular, there are more contacting parts on the rear wheels than on the front wheels, so it will take time for the parts to settle. For this reason, repeat the tightening process during the first 50 hours after installation. 4 - 38