PERIODIC MAINTENANCE AND ADJUSTMENT7-207characteristics 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 ahigh-speed 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.EAU21963Cast wheelsTo maximize the performance, durabil-ity, and safe operation of your vehicle,note the following points regarding thespecified wheels. The wheel rims should bechecked for cracks, bends, warp-age or other damage before eachride. If any damage is found, havea Yamaha dealer replace thewheel. Do not attempt even thesmallest repair to the wheel. A de-formed or cracked wheel must bereplaced. The wheel should be balancedwhenever either the tire or wheelhas been changed or replaced. Anunbalanced wheel can result inpoor performance, adverse han-dling characteristics, and a short-ened tire life.Front tire:Size:120/70 ZR17M/C (58W)Manufacturer/model:DUNLOP/D222FRear tire:Size:180/55 ZR17M/C (73W)Manufacturer/model:DUNLOP/D222FRONT and REAR:Tire air valve:TR412Valve core:#9100 (original)