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Old 06-09-2009, 08:23 AM   #1
wawawrx
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Default 08 TPMS & different pressures for Nexen tires

I have my stock all seasons on, and i believe they are supposed to be run about 39 psi... my question is:

what psi should i be running in my Nexen N3000 tires (when they come in) and if it's below 39 psi, is there even a point in switching the TPMS over?
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Old 06-09-2009, 11:28 AM   #2
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bump for knowledge
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Old 06-09-2009, 12:07 PM   #3
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There is very much mis-information on how the Subaru TPMS sensors work. Most Subaru dealers (all 3 I talked to) don't know what triggers the TPMS warning light and they pass out very inaccurate answers to questions on TPMS.

This is from Subaru's technical publication. The TPMS light only comes on if at least one tire is below about 27 pounds. The senosr can't be set to any other PSI setting and does not detect over-inflation.

"If the tire pressure drops below the minimum setting
approximately 27 psi), the sensor does not send its signal to
the control module. The module will then illuminate the
warning light.The warning light will not, however, indicate
which tire is low, so all tires need to be checked".
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Old 06-09-2009, 12:09 PM   #4
Kean
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....where did you get the 39 PSI # from? The pressure you decide to rung will depends on several factors. Either way, as long as the pressures are maintained above the recommended amounts listed on the door jamb (HINT: they are less than 39), there should be no problem. IIRC, it triggers when one or more tires drop below ~25-29 PSI so if the light does illuminate, you know you've got a problem.


EDIT: beat me to it Doug.
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Old 06-09-2009, 01:05 PM   #5
wawawrx
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i just pulled 39 out of the air... or lack there of air that is in my tires right now i have a leak in 1... but my new wheels go on wednesday so who cares

should i not bother switching the TPMS over from wheel to wheel and just check my pressures more often?
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Old 06-09-2009, 01:15 PM   #6
Kean
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....it's up to you. If you don't swap the sensors over the light will remain on (unless the new wheels/tires have them and you synch them to the car).

As for monitoring pressures, this really should be done on a regular basis anyhow.
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Old 06-09-2009, 01:17 PM   #7
wawawrx
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Quote:
Originally Posted by Kean View Post
....it's up to you. If you don't swap the sensors over the light will remain on (unless the new wheels/tires have them and you synch them to the car).

As for monitoring pressures, this really should be done on a regular basis anyhow.
can a tuner turn that light off by any chance?
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Old 06-09-2009, 01:27 PM   #8
Kean
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Quote:
Originally Posted by wawawrx View Post
can a tuner turn that light off by any chance?
...you can do some searching but as far as I know, no one has found a way to disable the light (short of remvoing the bulb or covering it up).
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Old 06-09-2009, 01:27 PM   #9
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*dbl post*
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