pontiac grand prix gxp

Asked by Dec 04, 2012 at 10:32 PM about the 2007 Pontiac Grand Prix GXP

Question type: Maintenance & Repair

why does my tire pressure change randomly

3 Answers

94,845

Tires will lose a around a pound for every 10 degree drop in temperature or you might have a leak.

32,795

If its more drastic than what tenspeed said it may be a faulty tpms sensor.

2,935

Also as you drive, the friction from the tires heat up the air in the tiires and increase the pressure slightly.

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