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Old 12-21-2005, 11:40 PM   #1
HAL1
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Default Best tire pressure on stock tires

I know the stockers aren't the best, but it seems that my 32/29 is not what most people here use. What is the benefit/cost of increasing pressure, and to what psi?
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Old 12-22-2005, 01:02 AM   #2
Pete Holt
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That will depend a lot on how you drive, but I was running 36 up front and 34 in the rear and that seemed to work pretty well for me. I do tend to take corners at a good clip.
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Old 12-22-2005, 09:40 PM   #3
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I Thought I could get more thoughts on the matter?
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Old 12-22-2005, 09:57 PM   #4
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Old 12-22-2005, 11:10 PM   #5
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I run 35F 32R, but still have more wear on the outside of the tire. I like this combo the best. You just need to play around with it and see what works best. There isn't one set number.
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Old 12-25-2005, 09:50 PM   #6
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at what temp should i take the tirepressure at? when the tire is cold...or after its been running for a while?
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Old 12-25-2005, 10:43 PM   #7
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from what ive heard cold tire pressure is more accurate, take the pressure in the morning before leaving for accurate numbers
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Old 12-26-2005, 10:25 PM   #8
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I think in the manual it says when they are hot (normal driving), they are 3.5 psi higher or something to that effect.
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Old 12-27-2005, 11:52 AM   #9
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Quote:
Originally Posted by HANZIE
from what ive heard cold tire pressure is more accurate, take the pressure in the morning before leaving for accurate numbers
It's not that cold is more accurate, it just better for base line pressures. As the tires heat up the pressures rise, but unless you are using a pyrometer to measure tire temps you have no way to know if temp is even across all tires hence affecting the relative pressures.

I run the RE92's at 44F 42R for all season driving. I hate how soft the sidewalls are.
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Old 12-27-2005, 12:10 PM   #10
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Quote:
Originally Posted by subieworx
I run the RE92's at 44F 42R for all season driving. I hate how soft the sidewalls are.
Thanks. This is only the second actual response to my question. I'm really hoping to get some more opinions for what pressure to use. I know that the "reccommended" presure is designed to give the best compromise of ride/handling/wear, but I was trying to see what other people use and why.

Thanks everyone.
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Old 12-27-2005, 04:23 PM   #11
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34F 32R on Falken Ziex. Not too hard because I got stiffer Eibach Prokits and AGX's. I drive around in the inner city a lot.
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Old 12-27-2005, 04:26 PM   #12
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Quote:
Originally Posted by CitySubie
34F 32R on Falken Ziex. Not too hard because I got stiffer Eibach Prokits and AGX's. I drive around in the inner city a lot.
Umm....those aren't the stock tires....
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Old 12-27-2005, 05:06 PM   #13
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I like to use whatever gives me the most even tire wear.

I used to run 35f/32r on my RE92s and they wore pretty evenly.
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Old 12-28-2005, 11:30 AM   #14
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Quote:
Originally Posted by Psydotek
I like to use whatever gives me the most even tire wear.
I actually don't care about wear, just traction on the curvies. When my stocks are gone, I'll upgrade. So, once again everyone, what tire pressues and why?
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Old 12-28-2005, 11:34 AM   #15
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With all due respect, you Uncle-ness, I've searched this and not only haven't I found much, I thought it was a reasonable question. It's not like I'm asking which tire pressure makes me go faster. Maybe I'm a little slow (insert joke here), but I'd think there's be a lot of opinions on this.
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Old 12-28-2005, 11:36 AM   #16
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Then you'll want to go pretty high to prevent the tire from rolling over onto the sidewall when cornering. 38psi is a good starting point since that's what they recommend when you take your car to an autoX.
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Old 12-28-2005, 01:00 PM   #17
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I don't have stock tires but I'm on stock size Falken 512's, 40 psi front, 26 psi rear for street driving.
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Old 12-28-2005, 01:01 PM   #18
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I assume you mean 36 and not 26.
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Old 12-29-2005, 12:05 AM   #19
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I autox'd them at 42/48 Sad attempt to make the car more neutral. I dunno if you'd want to daily drive like that
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Old 12-29-2005, 02:47 PM   #20
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i'm running 35F / 33R on my dunlop M3s. i would run the same if i still had my RE92s.
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Old 12-30-2005, 09:58 AM   #21
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Would higher than mfg recommended pressure give better grip, or just less sideways roll?
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Old 12-30-2005, 10:19 AM   #22
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To a certain point it decreases roll and enhances steering response and feel without decreasing grip. You have to get pretty high to decrease the contact patch.
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