A key part of a properly functioning bike is keeping the tires filled with the right pressure. If you want a safe and smooth bike ride, it is important to know how to pump your bicycle tire. Low tires make it harder to pedal and gain momentum, which may be dangerous on city streets. Understanding when your pressure is low and having the right parts is the key for an enjoyable bike ride.
Step 1
Identify the correct valve. There are two kinds of valves: the schrader and the presta. The schrader is the most common type of valve for mountain and recreational bikes. Presta valves are more common on racing bikes. The presta valve is longer and has a pointed tip. The schrader valve is shorter and thicker. Some bikes are compatible with both the presta and schrader valves, but it is best to look at your pump's instruction manual before you choose a valve. If you use the incorrect valve, you could end up damaging your tire. Never use the car pump at the gas station, as it could make your tires explode.
Step 2
Choose the recommended PSI, or pounds per square inch. The PSI is the maximum rated pressure rate you should use on your bike. The PSI is imprinted in the rubber on the side of your bike tire. A typical PSI, for example, is 40 to 65. In that case, for normal road use, you would choose 65 PSI in your tires. If you are going to ride your bike off-road, then you would choose a lower pressure. That's because if you hit a rock or a sharp edge, the impact can damage the rim of the bicycle wheel. If you don't have a pressure indicator on your pump, just fill the tires until they are firm, yet you can still squeeze them ever so slightly.
Step 3
Unscrew the cap on the valve of the tire. If you have a presta valve, you have to unscrew the nut and then press the stem down to loosen the valve.
Step 4
Press the pump head into the valve. If there is air in the tire, you will hear a hiss before you clamp down the head. Secure the lever.
Step 5
Pump air into your tire. Using the handle, pump a few times. You will feel pressure as you force air into the tire. Notice how the needle on the pressure gauge moves up. Continue to pump until the needle reaches the desired PSI level.
Step 6
Unclamp the pump head and pull off the tire valve very quickly. The faster you take it off, the less air will escape.
Step 7
Replace the valve cap. If you have a presta valve, then you must tighten the stem but before replacing the cap.
Things You'll Need
- Bike pump
- Presta or schrader valve
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