Best tire pressure on stock tires

HAL1 · 12-21-2005, 10:40 PM

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?

* Registered users of the site do not see these ads.

Pete Holt · 12-22-2005, 12:02 AM

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.

HAL1 · 12-22-2005, 08:40 PM

I Thought I could get more thoughts on the matter?

Uncle Scotty · 12-22-2005, 08:57 PM

http://www.oddjack.com/dead%20horse.jpg + http://www.thewhipman.co.nz/Full%20Mart%20whip.jpeg

HappyIdiot · 12-22-2005, 10:10 PM

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.

disaster999 · 12-25-2005, 08:50 PM

at what temp should i take the tirepressure at? when the tire is cold...or after its been running for a while?

HANZIE · 12-25-2005, 09:43 PM

from what ive heard cold tire pressure is more accurate, take the pressure in the morning before leaving for accurate numbers

HappyIdiot · 12-26-2005, 09:25 PM

I think in the manual it says when they are hot (normal driving), they are 3.5 psi higher or something to that effect.

subieworx · 12-27-2005, 10:52 AM

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.

HAL1 · 12-27-2005, 11:10 AM

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.

CitySubie · 12-27-2005, 03:23 PM

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.

subieworx · 12-27-2005, 03:26 PM

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....

Psydotek · 12-27-2005, 04:06 PM

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.

HAL1 · 12-28-2005, 10:30 AM

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?

HAL1 · 12-28-2005, 10:34 AM

Quote:

Originally Posted by Uncle Scotty

http://www.oddjack.com/dead%20horse.jpg + http://www.thewhipman.co.nz/Full%20Mart%20whip.jpeg

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.

Psydotek · 12-28-2005, 10:36 AM

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.

russd32 · 12-28-2005, 12:00 PM

I don't have stock tires but I'm on stock size Falken 512's, 40 psi front, 26 psi rear for street driving.

subieworx · 12-28-2005, 12:01 PM

I assume you mean 36 and not 26.

ButtDyno · 12-28-2005, 11:05 PM

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

WRXSleeper · 12-29-2005, 01:47 PM

i'm running 35F / 33R on my dunlop M3s. i would run the same if i still had my RE92s.

HAL1 · 12-30-2005, 08:58 AM

Would higher than mfg recommended pressure give better grip, or just less sideways roll?

Psydotek · 12-30-2005, 09:19 AM

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.

12-21-2005, 10:40 PM	#1
HAL1 Scooby Specialist Member#: 58926 Join Date: Apr 2004 Location: Phoenix, AZ - Ahwatukee Vehicle: 2013 WRX Wagon-Silvr 1992 Miata - red	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? * Registered users of the site do not see these ads.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Best everyday pressure on non-stock tires?	skiteton	Tire & Wheel	2	05-06-2008 02:32 PM
tire pressure on stock tires for sti? for track event	slowstangguy	Motorsports	8	01-12-2005 06:24 PM
air pressure on stock tires	Call_me_Tom	Tire & Wheel	13	05-16-2004 10:04 AM
Proper Tire pressure for stock tires	JDMTEG98	STi Forum Archive	21	07-23-2003 05:14 PM
Tire pressures for stock tires on WRX	SnortWagon	Brakes, Steering & Suspension	5	02-07-2002 12:15 PM

12-22-2005, 12:02 AM	#2
Pete Holt NASIOC Supporter Member#: 12 Join Date: Jun 1999 Chapter/Region: MWSOC Location: Appleton, WI Vehicle: 2005 M3 Mystic Blue	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.

12-22-2005, 08:40 PM	#3
HAL1 Scooby Specialist Member#: 58926 Join Date: Apr 2004 Location: Phoenix, AZ - Ahwatukee Vehicle: 2013 WRX Wagon-Silvr 1992 Miata - red	I Thought I could get more thoughts on the matter?

12-22-2005, 08:57 PM	#4
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle	http://www.oddjack.com/dead%20horse.jpg + http://www.thewhipman.co.nz/Full%20Mart%20whip.jpeg

12-22-2005, 10:10 PM	#5
HappyIdiot Scooby Newbie Member#: 83494 Join Date: Mar 2005 Chapter/Region: MAIC Location: Alexandria, VA Vehicle: 2004 WRX Wagon Red	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.

12-25-2005, 08:50 PM	#6
disaster999 Scooby Specialist Member#: 73197 Join Date: Oct 2004 Chapter/Region: International Location: Hong Kong	at what temp should i take the tirepressure at? when the tire is cold...or after its been running for a while?

12-25-2005, 09:43 PM	#7
HANZIE Scooby Newbie Member#: 80319 Join Date: Jan 2005 Chapter/Region: TXIC Location: Houston Vehicle: 04 WRX WRB	from what ive heard cold tire pressure is more accurate, take the pressure in the morning before leaving for accurate numbers

12-26-2005, 09:25 PM	#8
HappyIdiot Scooby Newbie Member#: 83494 Join Date: Mar 2005 Chapter/Region: MAIC Location: Alexandria, VA Vehicle: 2004 WRX Wagon Red	I think in the manual it says when they are hot (normal driving), they are 3.5 psi higher or something to that effect.

12-27-2005, 03:23 PM	#11
CitySubie Scooby Newbie Member#: 60099 Join Date: Apr 2004 Location: N.Y.C. Vehicle: 2003 Impreza RS The perty blue one	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.

12-27-2005, 04:06 PM	#13
Psydotek Scooby Guru Member#: 44168 Join Date: Sep 2003 Chapter/Region: SCIC Location: In your pant[ie]s. Vehicle: 2003 Yellow WRX with too many lights...	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.

12-28-2005, 10:36 AM	#16
Psydotek Scooby Guru Member#: 44168 Join Date: Sep 2003 Chapter/Region: SCIC Location: In your pant[ie]s. Vehicle: 2003 Yellow WRX with too many lights...	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.

12-28-2005, 12:00 PM	#17
russd32 Scooby Specialist Member#: 63961 Join Date: Jun 2004 Chapter/Region: MWSOC Location: Normal, IL Vehicle: 2005 WRX Blue	I don't have stock tires but I'm on stock size Falken 512's, 40 psi front, 26 psi rear for street driving.

12-28-2005, 12:01 PM	#18
subieworx Scooby Guru Member#: 47769 Join Date: Nov 2003 Chapter/Region: MWSOC	I assume you mean 36 and not 26.

12-28-2005, 11:05 PM	#19
ButtDyno Street's closed, pizza boy Member#: 17301 Join Date: Apr 2002 Chapter/Region: MAIC Location: Why do they always say the Evo Vehicle: is the "dark side" 06 Evo #7 STU, 05 Saabaru	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

12-29-2005, 01:47 PM	#20
WRXSleeper Scooby Specialist Member#: 43853 Join Date: Sep 2003 Chapter/Region: NESIC Location: Methuen, MA Vehicle: 2004 WRX Sedan Stg 2 Platinum Silver	i'm running 35F / 33R on my dunlop M3s. i would run the same if i still had my RE92s.

12-30-2005, 08:58 AM	#21
HAL1 Scooby Specialist Member#: 58926 Join Date: Apr 2004 Location: Phoenix, AZ - Ahwatukee Vehicle: 2013 WRX Wagon-Silvr 1992 Miata - red	Would higher than mfg recommended pressure give better grip, or just less sideways roll?

12-30-2005, 09:19 AM	#22
Psydotek Scooby Guru Member#: 44168 Join Date: Sep 2003 Chapter/Region: SCIC Location: In your pant[ie]s. Vehicle: 2003 Yellow WRX with too many lights...	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.