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35 PSI Too High ?

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Old May 12, 2009 | 06:54 PM
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Default 35 PSI Too High ?

How much pressure do you guys run in your tires? My 95's allways had 35 PSI but I notice the centers have less rubber than the outside. I know it's probably because you can't rotate them being different sizes on the front & rears.
Anyone run different pressure?
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Old May 12, 2009 | 08:13 PM
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The inside of my door says to run them at 35psi, so thats what I've been doing since I got it!
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Old May 12, 2009 | 08:17 PM
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I usually run 32 front and 31 rear. If I'm going on a long hwy haul with speeds 70 & up, I bring them up to 34 & 33. Mine are same size front to rear('96 LT4). Can't tell you about wear yet, still on the P-Zero's that came with it a couple of years ago. They seem to be wearing evenly so far.
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Old May 12, 2009 | 09:00 PM
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My 1995 says, unside the door, to run 30 PSI. My car has EMT tires.
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Old May 12, 2009 | 09:17 PM
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Both the owners manuals in my 95 and 96 state 30psi.
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Old May 12, 2009 | 09:41 PM
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I've always been told to adjust the pressure to where the tread contacts the road best. Somewhere that you can see the tread pattern contact to the ground evenly. Or you can weigh the car at all four wheels and adjust that way.
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Old May 13, 2009 | 08:03 AM
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Been running 35 psi for over five years...
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Old May 13, 2009 | 08:37 AM
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35psi-all 4..
I've got the same size all around, so I can rotate them as well..
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Old May 13, 2009 | 10:44 AM
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Originally Posted by runner140*
Been running 35 psi for over five years...
YES
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Old May 14, 2009 | 07:17 AM
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Originally Posted by CAJUN C4
How much pressure do you guys run in your tires? My 95's allways had 35 PSI but I notice the centers have less rubber than the outside. I know it's probably because you can't rotate them being different sizes on the front & rears.
Anyone run different pressure?
Just a simple rule.
If you are getting more wear on the insides they are over inflated. Under inflating would cause the otter edges to wear faster.
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Old May 14, 2009 | 11:25 AM
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Originally Posted by kenmohr
Just a simple rule.
If you are getting more wear on the insides they are over inflated. Under inflating would cause the otter edges to wear faster.
Very True...Unless a few Smoking Starts along the way....

I just checked the door placard and it states
"For Competitive or High Speed Driving Increase Pressure to 35 PSI".

Last edited by CAJUN C4; May 14, 2009 at 11:32 AM.
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Old May 14, 2009 | 11:33 AM
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Originally Posted by glass car
Both the owners manuals in my 95 and 96 state 30psi.
I might drop it down to 30 Psi
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Old May 14, 2009 | 02:58 PM
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Originally Posted by CAJUN C4
Very True...Unless a few Smoking Starts along the way....
".

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Old May 14, 2009 | 03:26 PM
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Damn, I run mine at like 42psi on the front and 45-46psi in the rear. The fronts say something like max 44 psi and the rears say 50 or 52 psi so I figured I was ok. I like the stiff ride too as I feel much more of the road.

Now all of you guys have me thinking it's too much.
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Old May 14, 2009 | 03:38 PM
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Default That seems a little high...

Pressures in the 40s seems too high... See if they've been wearing in the middle. Overinflating can get you better gas mileage, but your cornering will suffer. You might try them at 35 for a while and see what you thinks...

- WPK
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Old May 14, 2009 | 04:20 PM
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Originally Posted by WPK
Pressures in the 40s seems too high... See if they've been wearing in the middle. Overinflating can get you better gas mileage, but your cornering will suffer. You might try them at 35 for a while and see what you thinks...

- WPK
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Old May 14, 2009 | 06:25 PM
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30 pounds cold is what GM recommends. Not to mention you will gain close to 5 pounds when your tires warm up.
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To 35 PSI Too High ?

Old May 14, 2009 | 06:49 PM
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Originally Posted by VetteStir
30 pounds cold is what GM recommends. Not to mention you will gain close to 5 pounds when your tires warm up.
Yes,It's 1 Lb. Increase in Pressure for every 10 Degrees Increase in Temp.

I'm going back to 30 PSI.
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Old May 16, 2009 | 06:05 PM
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30 Psi in both Cars..Rides a little better. Hope it evens my tire wear.
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Old May 28, 2009 | 12:58 PM
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At 32 Psi seems to have much bettter grip..they don't spin as much.Tread contact with ground must be flatter.Not just in the middle.
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