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Motorcycle Tire Inflation - Tips and Rules

Always keep the motorcycle manufacturer's recommended air pressure in both tires. This is an important requirement for tire safety and mileage. Your motorcycle owner’s manual will tell you the recommended cold inflation pressure. On some motorcycles, the recommended front and rear tire pressures will be different. The pressures stamped on the sidewall of the tire are only for maximum loads. On some occasions, these pressures will also be the manufacturers recommended settings as well.

Riding on tires with too little air pressure is dangerous. The tires will build excessive heat. This can cause a sudden tire failure that could lead to serious personal injury or death.

Underinflation may also:

1. Damage the tire leading to tire failure
2. Adversely affect vehicle cornering
3. Reduce tire life
4. Increase fuel consumption
5. Fatigue cracking

Riding on tires with too much air can be dangerous. The tires are more likely to be cut, punctured, or broken by sudden impact. Serious personal injury or death could result. Do not exceed the pressure indicated on the tire sidewall. Consult your owner’s manual for the recommended inflation and other tire information.

Never inflate a tire unless it is secured to the motorcycle or a tire-mounting machine. Inflating an unsecured tire is dangerous. If it bursts, it could be hurled into the air with explosive force resulting in serious personal injury or death.

Valve Stems, Cores & Caps

Old or damaged valve stems and cores may cause air loss. Replace them when mounting new tires. Use caps (finger tight) on the valve stems to keep dust, dirt and moisture away from the valve.

Checking Tire Inflation

• Check your tire air pressure at least once a week and before long trips. Be sure to use an accurate pressure gauge.
• Check your air pressure when the tires are "cold." The tires are "cold" when your motorcycle has been ridden less than a mile at moderate speed or after being stopped for three or more hours.
• If you must add air when your tires are hot, add four pounds per square inch (4 psi)(28 kPa) above the recommended cold inflation pressure. Recheck the inflation pressure when the tire is cold.
• Never release air from a hot tire in order to reach the recommended cold tire pressure. Normal riding causes tires to run hotter and inflation pressure to increase. If you release air when your tires are hot, you may dangerously under inflate your tires.

If your tires lose more than two pounds per square inch (2 psi)(14 kPa) per month, the tire, the valve, or wheel may be damaged. Consult your local dealer for an inspection. Use valve caps to keep valve cores clean, clear of debris and to help guard against air leakage.