tire pressure

Asked by Jun 02, 2015 at 08:52 PM about the 2004 Cadillac DeVille DHS Sedan FWD

Question type: Maintenance & Repair

My tire pressure increases as I drive, fluctuating 4 - 5 lbs per each tire.

3 Answers

115,915

If you want to know if that is normal, then yes it is, that is why they tell you to take the reading when the tires are cold.

1 people found this helpful.
65,345

Tennisshoes is correct. It's normal, my Corvette does this also. Usually about 4 psi according to the information display on my dash. The heat that the tires create during driving will warm the air inside them thus increasing the pressure. The pressure goes back down when the tires cool. When checking air pressure in a tire it is always best to do it when the tire is cold (as in not driven for a few hours),

1 people found this helpful.
9,955

On a Class A motorhome - it can easily be a 10 psi jump at highway speeds. On a car - 4-5 psi jump is normal. May be more in summer and less in winter.

3 people found this helpful.

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