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post #1 of 34 (permalink) Old 09-04-2009, 10:02 PM Thread Starter
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Recommended Tire Pressure

I have a 2009 Cobalt XFE. OnStar recommends my tire pressure to be 33PSI, but on the tires themselves it says 44PSI. Which should I go by?
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post #2 of 34 (permalink) Old 09-04-2009, 10:07 PM
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id go by the tires myself.
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post #3 of 34 (permalink) Old 09-04-2009, 10:40 PM
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yeah first make sure the tires dont say maximum pressure 44 psi lol. if its just 44 psi recommended definitely trust the tires over onstar



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post #4 of 34 (permalink) Old 09-04-2009, 10:44 PM
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post #5 of 34 (permalink) Old 09-05-2009, 12:26 AM
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44 seems mighty high...mine are filled to 35 pounds

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post #6 of 34 (permalink) Old 09-05-2009, 12:29 AM
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Always go with what the tire says.


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post #7 of 34 (permalink) Old 09-05-2009, 12:34 AM
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Quote:
Originally Posted by 06BlackLS View Post
Always go with what the tire says.
for sure!!!
QFT!!!
.
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post #8 of 34 (permalink) Old 09-05-2009, 03:43 AM
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i always go about 5 psi under the max. whats it at now?

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post #9 of 34 (permalink) Old 09-05-2009, 06:50 AM
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go with the tire, 44 sems alot to me, you can do 40


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post #10 of 34 (permalink) Old 09-05-2009, 09:40 AM
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Forget BOTH, especially the tire sidewall. The sidewall states MAXIMUM pressure the tire is rated for... Go to GM tire pressure label visible when you open your left front door. This will tell you the recommended tire pressure for YOUR car. Pressures are quoted here when "cold." Cold in this sense means check tires first thing the next day after car has sat overnight or 4-6 hours after last driven. As you drive, the tires warm which will increase their pressure, thus giving you an inaccurate "cold" pressure reading. Check your owner's manual to verify this information.
The XFE may have specific pressures to maintain its fuel economy status.


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Last edited by 423; 09-06-2009 at 10:32 AM.
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