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Winter makes certain adjustments to the operation of each car. In addition to other systems and components, car tires also require a slightly different approach from the owner.
There is no need to guess what the optimal pressure in the wheels of a car should be. Everything about this is in the car’s owner’s manual. In addition, signs indicating the recommended pressure are located in the driver’s door opening or on the back of the gas filler flap. It is believed that there is no need to invent anything here: pump it up to the values specified in the “manual” and do not worry. But winter is cold. Moreover, in Russia there are sometimes very severe frosts.
Every high school graduate knows that substances decrease in volume when cooled. Gases are especially sensitive to this phenomenon. If you walk from a warm apartment into the bitter cold with an empty plastic bottle with a screw cap, you will see a clear demonstration of this effect: the bottle is immediately and forcefully compressed by atmospheric pressure as soon as the air inside it begins to evaporate. cool.
Roughly the same process takes place with tires. Especially if you actually inflate the tire once a season – switch to winter tires in the fall. For most passenger cars, the car manufacturer sets the optimal tire pressure at 2.2-2.4 atmospheres. The master pumps him to this level. And when the car is on the street, the air inside the tire begins to cool to the level of the outside atmosphere. It has been empirically deduced that for every 8ºC decrease in temperature, the pressure in the wheels with the largest radii decreases by approximately 0.1 atmosphere.
That is, when a tire is cooled from a room temperature of 25ºC to, for example, -10ºC, the pressure within it decreases by approximately 0.4. And from 2.2-2.4 there remains 1.8-2 actual atmospheres. That is clearly below optimal.
First of all, flat tires noticeably deteriorate the driving behavior of the car. It holds its trajectory less clearly and is more susceptible to slipping in corners. This is especially dangerous on slippery winter surfaces. Under-inflated tires have increased rolling resistance, which significantly increases your vehicle’s fuel consumption. Well, they wear out more at reduced pressure and, what is even more unpleasant, at an accelerated pace and more unevenly. And with studded tires, the studded tires also start to fail noticeably faster in such a situation.
To combat all this winter negativity, only check the pressure in the wheels after they have been outside in the cold for less than an hour. Ideally in the morning after an overnight stay. After making sure that there really isn’t enough atmosphere in the tires, you should add them using a pump with a pressure gauge. But only up to the lower limit of the car manufacturer’s recommended range.
The fact is that during movement, the wheels and the air in them are slightly heated. Usually – by 0.1-0.2 atmospheres in frosty weather. Thanks to this effect, at the recommended pressure range, for example 2.2-2.4 atmospheres, the rubber will operate at 2.2 atmospheres immediately after the car leaves a parking lot and at no more than 2.4 atmospheres after a long drive. That is, in the optimal range.
There is no need to guess what the optimal pressure in the wheels of a car should be. Everything about this is in the car’s owner’s manual. In addition, signs indicating the recommended pressure are located in the driver’s door opening or on the back of the gas filler flap. It is believed that there is no need to invent anything here: pump it up to the values specified in the “manual” and do not worry. But winter is cold. Moreover, in Russia there are sometimes very severe frosts.
Every high school graduate knows that substances decrease in volume when cooled. Gases are especially sensitive to this phenomenon. If you walk from a warm apartment into the bitter cold with an empty plastic bottle with a screw cap, you will see a clear demonstration of this effect: the bottle is immediately and forcefully compressed by atmospheric pressure as soon as the air inside it begins to evaporate. cool.
Roughly the same process takes place with tires. Especially if you actually inflate the tire once a season – switch to winter tires in the fall. For most passenger cars, the car manufacturer sets the optimal tire pressure at 2.2-2.4 atmospheres. The master pumps him to this level. And when the car is on the street, the air inside the tire begins to cool to the level of the outside atmosphere. It has been empirically deduced that for every 8ºC drop in temperature, the pressure in wheels with the largest radius decreases by approximately 0.1 atmosphere.
That is, when a tire is cooled from a room temperature of 25ºC to, for example, -10ºC, the pressure within it decreases by approximately 0.4. And from 2.2-2.4 there remains 1.8-2 actual atmospheres. That is clearly below optimal.
First of all, flat tires noticeably deteriorate the driving behavior of the car. It holds its trajectory less clearly and is more susceptible to slipping in corners. This is especially dangerous on slippery winter surfaces. Under-inflated tires have increased rolling resistance, which significantly increases your vehicle’s fuel consumption. Well, they wear out more at reduced pressure and, what is even more unpleasant, at an accelerated pace and more unevenly. And with studded tires, the studded tires also start to fail noticeably faster in such a situation.
To combat all this winter negativity, only check the pressure in the wheels after they have been outside in the cold for less than an hour. Ideally in the morning after an overnight stay. After making sure that there really isn’t enough atmosphere in the tires, you should add them using a pump with a pressure gauge. But only up to the lower limit of the car manufacturer’s recommended range.
The fact is that during movement, the wheels and the air in them are slightly heated. Usually – by 0.1-0.2 atmospheres in frosty weather. Thanks to this effect, at the recommended pressure range, for example 2.2-2.4 atmospheres, the rubber will operate at 2.2 atmospheres immediately after the car leaves a parking lot and at no more than 2.4 atmospheres after a long drive. That is, in the optimal range.
Source: Avto Vzglyad
Donald Salinas is an experienced automobile journalist and writer for Div Bracket. He brings his readers the latest news and developments from the world of automobiles, offering a unique and knowledgeable perspective on the latest trends and innovations in the automotive industry.
