Optimum tire pressure in a bicycle

The quality and type of tires affect the coasting (rolling) of the bicycle. On the ripple affects the material of the sidewall tires, tread pattern, as well as pressure.

Any cyclist knows that without a pumpdo without. You need to pump tires constantly. And the pressure in the tires of a bicycle is lost not only when driving, but also when it stands in the parking lot (just not so fast).

What determines the pressure in the tires of a bicycle?First, the quality of the ride. On gently inflated tires it is more convenient to overcome roughness of a road cloth, at strongly inflated - the bicycle goes faster. Secondly, the pressure affects how long the tire will last, whether there will be punctures in it. If speed and comfort during driving are a matter of taste, then the integrity of the rubber should be taken care of. It's not even that the punctured wheel will have to be repaired. In some cases, when the pressure in the tires of a bicycle is incorrect, it is not only possible damage, but also strong wheel breaks and bicycle injuries.

The easiest way is if you have an ordinary walkinga bike. The pressure in the tires of sports models should be controlled more carefully, especially with a tough style of driving and on difficult routes. For those who prefer to ride on an asphalt track or rural paths it is enough to focus on marking tires. The manufacturer took care in advance and put on the side surface of the inscription about what pressure should be in the wheels of the bicycle. Usually it is indicated in psi or bar (it is translated according to the following formula: 1 kPa = psi * 6.895, we recall that 100 kPa ~ 1 kg / cm ^ 2 ~ 1 bar.) Without pumping once a month, the bus loses up to 15 psi.

In walking bicycles, tire pressure canvary between 1.5 and 4.5 bar, which can be found in more detail by marking. The upper limit is preferable for those who ride on a hard and level ground, the bottom - for those who are more likely to encounter stones, puddles and grass.

What pressure should be in the tires of a bicycle? For sports models, the following is recommended:

Route Type	Maximum, bar
Forest	3,5
City half-grown	5
The highway tube	7

The pressure in the rear wheel should be slightly greater than in the front wheel. For a rider of great weight, figures need to be reduced, and for a child, respectively, increase.

A manometer is required for measurements.Now many bicycle pumps are equipped with this device at once, but one must take into account that a small square manometer often gives a large error. When this is critical, it is better to purchase a measuring tool separately. And the owners of tires with a car valve can pump up and measure the pressure in them at the gas station.

An experienced cyclist can determine the pressure intires without the help of appliances. It is necessary to grasp the tire with your hand and press the thumb with the camera. Correctly selected pressure will create the feeling that you squeeze a ripe watermelon.

But within the permissible limits, you can pump the wheels the way you feel comfortable driving.

So, many prefer that tire pressurethe bike was bigger. After all, it is convenient in motion. But for beginners, on the contrary, it is recommended to reduce pressure. And if you want the wheels to last as long as possible, choose the optimal (or average) value of 3 bar or 45 psi.