Two main reasons: 1. all tires leak at a very slow rate. 2. A 10 deg F drop in air temp will cause a 1 psi drop in the tire.
In the winter, tires tend to loose capacity and shrink. Therefore making the air level decrease.
Winter, because there's mire heat and pressure in the Summer.
There are many types of winter tires that Uniroyal offers. These tires all commonly fight through the winter weather of snow and ice, but each are a little different to be the right type for your car.
The manufacturer's recommended PSI is the law, but it will vary with temperature, which is why you need to check the pressure monthly. Pressure will go down in the winter, and will go up in the summer. Always check tire pressure "cold" - that is, when the car has been sitting for three hours. Adjust as necessary. Once a month, year round.
It is necessary to balance your tires when they are rotated because blancing results in equal air pressure on all 4 tires. Less air in one of the tires will result in faster wear, resulting in the need to rotate more often.
Make sure the tires have the correct pressure.
read it off the tire (it's printed on the side). Some tires are higher pressure tires. The proper pressure for you vehicle's tires will be listed on the label on the driver side door jamb.
Yes, the heat causes the air to expand in the tires. Conversely, the cold air in winter reduces tire pressure.
it tells you right on the tires
The proper pressure for you vehicle's tires will be listed on the label on the driver side door jamb.
There is a sticker in the car right where the driver's side door meets the frame which shows the proper tire pressure for your tires. For this year, make, and model with these tires, the correct pressure should be 41psi while the tires are cold.
because the pressure on a warm day is greater then the amount of pressure on a cold day