2007 Yamaha Motorsports Midnight Warrior Owners Manual - Page 58

PERIODIC MAINTENANCE AND MINOR REPAIR G G Always make sure that the valve caps are securely installed to prevent air pressure leakage. Use only the tire valves and valve cores listed below to avoid tire deflation during a high-speed ride. EWA10600 EAU21960 WARNING This motorcycle is fitted with superhigh-speed tires. Note the following points in order to make the most efficient use of these tires. G Use only the specified replacement tires. Other tires may run the danger of bursting at super high speeds. G Brand-new tires can have a relatively poor grip on certain road surfaces until they have been "broken in". Therefore, it is advisable before doing any highspeed riding to ride conservatively for approximately 100 km (60 mi) after installing a new tire. G The tires must be warmed up before a high-speed run. G Always adjust the tire air pressure according to the operating conditions. Cast wheels To maximize the performance, durability, and safe operation of your vehicle, note the following points regarding the specified wheels. G The wheel rims should be checked for cracks, bends or warpage before each ride. If any damage is found, have a Yamaha dealer replace the wheel. Do not attempt even the smallest repair to the wheel. A deformed or cracked wheel must be replaced. G The wheel should be balanced whenever either the tire or wheel has been changed or replaced. An unbalanced wheel can result in poor performance, adverse handling characteristics, and a shortened tire life. G Ride at moderate speeds after changing a tire since the tire surface must first be "broken in" for it to develop its optimal characteristics. 6 Front tire: Size: 120/70 ZR18M/C (59W) Manufacturer/model: DUNLOP/D220F ST G BRIDGESTONE/BT020F G Rear tire: Size: 200/50 ZR17M/C (75W) Manufacturer/model: DUNLOP/D220 ST BRIDGESTONE/BT020R FRONT and REAR: Tire air valve: TR412 Valve core: #9100 (original) 6-19