Periodic maintenance and adjustment6-196Tire informationThis model is equipped with tubelesstires and tire air valves.Tires age, even if they have not beenused or have only been used occasion-ally. Cracking of the tread and sidewallrubber, sometimes accompanied bycarcass deformation, is an evidence ofageing. Old and aged tires shall bechecked by tire specialists to ascertaintheir suitability for further use.WARNINGEWA10902 The front and rear tires shouldbe of the same make and de-sign, otherwise the handlingcharacteristics of the motorcy-cle may be different, whichcould lead to an accident. Always make sure that the valvecaps are securely installed toprevent air pressure leakage. Use only the tire valves andvalve cores listed below toavoid tire deflation during a ride.After extensive tests, only the tires list-ed below have been approved for thismodel by Yamaha.WARNINGEWA10601This motorcycle is fitted with super-high-speed tires. Note the followingpoints in order to make the most ef-ficient use of these tires. Use only the specified replace-ment tires. Other tires may runthe danger of bursting at superhigh speeds. Brand-new tires can have a rel-atively poor grip on certain roadsurfaces until they have been“broken in”. Therefore, it is ad-visable before doing any high-speed riding to ride conserva-tively for approximately 100 km(60 mi) after installing a new tire. The tires must be warmed upbefore a high-speed run. Always adjust the tire air pres-sure according to the operatingconditions.1. Tire air valve2. Tire air valve core3. Tire air valve cap with sealFront tire:Size:120/70ZR17M/C 58WManufacturer/model:BRIDGESTONE/BATTLAXHYPERSPORT S22FRear tire:Size:180/55ZR17M/C 73WManufacturer/model:BRIDGESTONE/BATTLAXHYPERSPORT S22RFRONT and REAR:Tire air valve:TR412Valve core:#9100 (original)