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Compressed air normally expands 7psi after a tire warms up & contains moisture (not good for rubber & heat). Decreasing air pressure allows for the tire to expand while driving, especially on hot days, but also decreases gas mileage as well. It is not necessary to do this. I recommend asking your local tire center or auto dealer about replacing the air with "nitrogen gas". The temperature of the tire is greatly reduced & fuel economy increases using "nitrogen gas".

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Q: Why drivers are advised to decrease the pressure og their wheel's tire when they travel during hot day?
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Why drivers are advised to decrease the pressure of their vehicle's tires when they travel during hot days?

Heat can cause gasses to expand, which means that in closed spaces like tires, the pressure can rise. If a tire's already at high pressures before, the heat may cause it to tear, or pop. Obviously, that's bad.


Explain why drivers are advised to decrease the pressure of their vehicle tires when they travel during hot days?

Heat can cause gasses to expand, which means that in closed spaces like tires, the pressure can rise. If a tire's already at high pressures before, the heat may cause it to tear, or pop. Obviously, that's bad.


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The air pressure will increase when the sky is clear and the sun is out, and will decrease during storms or poor weather.


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The air pressure will increase when the sky is clear and the sun is out, and will decrease during storms or poor weather.


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Turn on your headlights. Even if its during the day, you should turn on your headlight so other drivers can see you a lot more easier than without your lights on.


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Turn on your headlights. Even if its during the day, you should turn on your headlight so other drivers can see you a lot more easier than without your lights on.