Tire Air Pressure

[HeavyMetal]

Hi there,

Could anybody tell me or give some source chart/table regarding to the proper tire air pressures according to the car/season/tire position inputs.

Should there be any pressure difference between front and rear tires? And should there be any pressure adjustment among different season temperatures?

Note: I have 2003 Grand AM, 3400 V6, and I'm using the factory tires.

Thanks in advance!

[99GrandAMSE]

... without being sarcastic, the 'factory' recommended tire pressures are on the end of the driver side door next to the latch or inside the manual :) ... any deviation from these values are typically done in response to a specific owners preference or how they drive (i.e.: carrying heavy loads, firm ride, etc).

[BLACK99GT/ROB]

30 psi

[rixGAphx]

For fwd passenger cars, the pressure should be the same at all four corners.

Read the Owner's manual:
Increase a couple psi rear for a heavy load in trunk or rear seat.
Measure tire pressure cold.
Doesn't matter winter-summer, Phoenix-Minnesota, sea level-mountains: Tire pressure is relative to inside the tire vs outside the tire.
(If you drove from warm sea level to high-altitude cold, THEN you would need to let some air out.)

Good luck.
-Rick

[tenspeed]

An interesting factoid I read last week - for each ten degrees temperature drop, your tire pressure goes down one pound.

Air up when it gets cold out. Maybe that's one of the causes of bad gas mileage in the winter.

[Rayz]

FYI


chart (http://img4.photobucket.com/albums/1103/RAYZ97/chart.jpg)

[HeavyMetal]

Thanks Rayz, I appreciate your reply.