Welcome to the North American Subaru Impreza Owners Club Tuesday September 30, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Tire & Wheel Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Tire & Wheel

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 12-20-2005, 01:21 PM   #1
-=Ice-T=-
Scooby Newbie
 
Member#: 30956
Join Date: Dec 2002
Default 40 psi too much for Kumho Ecsta MX?

I have Kumho Ecsta MX's mounted on Rota Subzeros. Right now, the pressure in the front tires is about 43 and the pressure in the back tires is about 41. Is that too much?
* Registered users of the site do not see these ads.
-=Ice-T=- is offline   Reply With Quote
Old 12-20-2005, 02:57 PM   #2
Erexxx
Scooby Specialist
 
Member#: 92054
Join Date: Jul 2005
Chapter/Region: SCIC
Location: Aliso Viejo
Vehicle:
2008 Mazdaspeed 3
Cosmic Blue Mica

Default

I dunno, but I have the ones rigth below the Mx's, the SPT's, and I run 36 up front and 38 in back. Seemed to work well at the track this weekend.
Erexxx is offline   Reply With Quote
Old 12-20-2005, 03:01 PM   #3
Rich10
Scooby Specialist
 
Member#: 14934
Join Date: Feb 2002
Chapter/Region: Tri-State
Location: Long Island
Vehicle:
2002 WRX
WRB

Default

For autox, I run 42 to 44 psi. For the street, I run about 37psi. YMMV
Rich10 is offline   Reply With Quote
Old 12-20-2005, 03:05 PM   #4
rallymaniac
Scooby Specialist
 
Member#: 52189
Join Date: Jan 2004
Chapter/Region: MWSOC
Location: Elgin, IL
Vehicle:
2006 MINIiiiiii
:)

Default

Quote:
Originally Posted by -=Ice-T=-
I have Kumho Ecsta MX's mounted on Rota Subzeros. Right now, the pressure in the front tires is about 43 and the pressure in the back tires is about 41. Is that too much?
for daily driving you're about 6psi too high, but for the autox or spirited driving I'm driving around 48PSI.
rallymaniac is offline   Reply With Quote
Old 12-20-2005, 03:20 PM   #5
Erexxx
Scooby Specialist
 
Member#: 92054
Join Date: Jul 2005
Chapter/Region: SCIC
Location: Aliso Viejo
Vehicle:
2008 Mazdaspeed 3
Cosmic Blue Mica

Default

Quote:
Originally Posted by rallymaniac
for daily driving you're about 6psi too high, but for the autox or spirited driving I'm driving around 48PSI.
wow for spirited driving you guys actually go up that high? Hmm maybe next time I go to the track I'll raise them up a bit and see if I notice a difference...
Erexxx is offline   Reply With Quote
Old 12-20-2005, 03:23 PM   #6
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

I ran my MX's at ~41F/39R for 20K+ miles.....
Uncle Scotty is offline   Reply With Quote
Old 12-21-2005, 09:25 AM   #7
shane86
Scooby Newbie
 
Member#: 67387
Join Date: Aug 2004
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
04 WRX - STX
05 LGT Limited Wagon

Default

Quote:
Originally Posted by Erexxx
wow for spirited driving you guys actually go up that high? Hmm maybe next time I go to the track I'll raise them up a bit and see if I notice a difference...
Yup. it helps stiffen the tire up so you don't roll on to the sidewall under hard turns.

Plus, a little varying of tire pressure can actually adjust under/oversteer.
shane86 is offline   Reply With Quote
Old 12-21-2005, 05:45 PM   #8
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Quote:
Originally Posted by Erexxx
wow for spirited driving you guys actually go up that high? Hmm maybe next time I go to the track I'll raise them up a bit and see if I notice a difference...


....w 0 w....ya track the car and didn't know about raising/adjusting tire pressures for altering the balance and handling of your car????
Uncle Scotty is offline   Reply With Quote
Old 12-22-2005, 12:37 PM   #9
Erexxx
Scooby Specialist
 
Member#: 92054
Join Date: Jul 2005
Chapter/Region: SCIC
Location: Aliso Viejo
Vehicle:
2008 Mazdaspeed 3
Cosmic Blue Mica

Default

Quote:
Originally Posted by Uncle Scotty
....w 0 w....ya track the car and didn't know about raising/adjusting tire pressures for altering the balance and handling of your car????
No, I did. I just didn't know people went as high as 48 PSI...My car handled well with 38R, 36F
Erexxx is offline   Reply With Quote
Old 12-22-2005, 01:44 PM   #10
ratt_finkel
Scooby Specialist
 
Member#: 46218
Join Date: Oct 2003
Chapter/Region: TXIC
Location: Dallas, Tejas
Vehicle:
06 EVO 9
Silver

Default

People reguarly see psi in the 50's depending on the setup.
Not a big deal.
ratt_finkel is offline   Reply With Quote
Old 12-22-2005, 06:55 PM   #11
Rich10
Scooby Specialist
 
Member#: 14934
Join Date: Feb 2002
Chapter/Region: Tri-State
Location: Long Island
Vehicle:
2002 WRX
WRB

Default

Quote:
Originally Posted by ratt_finkel
People reguarly see psi in the 50's depending on the setup.
Not a big deal.
At pressures of greater than 45psi on my MX's, my but dyno (and autox times) told me that I was losing grip.
Rich10 is offline   Reply With Quote
Old 12-22-2005, 08:39 PM   #12
jbrs05
Scooby Newbie
 
Member#: 93347
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Vancouver Wa
Vehicle:
2005 RS
Silver

Default

whats the size of the tire?
In my 225/40 18's i fun 40 front and 35 rear so. Thats becuase with lower air in the shoulders of my front tires where wearing faster. so i put more air in.
jbrs05 is offline   Reply With Quote
Old 12-22-2005, 09:43 PM   #13
rex n effect
Scooby Specialist
 
Member#: 15289
Join Date: Feb 2002
Chapter/Region: MAIC
Location: Between Trenton and Philadelph
Vehicle:
02 wrx pollen silv
& '11 TDi dadwagon

Default

Quote:
Originally Posted by Rich10
At pressures of greater than 45psi on my MX's, my but dyno (and autox times) told me that I was losing grip.
I felt that, too, around the same pressures. Mine would also "skip" instead of sliding nicely if their pressures got too high, but that also depends on suspension. 40 psi is not too much.
rex n effect is offline   Reply With Quote
Old 12-22-2005, 09:45 PM   #14
Rich10
Scooby Specialist
 
Member#: 14934
Join Date: Feb 2002
Chapter/Region: Tri-State
Location: Long Island
Vehicle:
2002 WRX
WRB

Default

Quote:
Originally Posted by jbrs05
whats the size of the tire?
In my 225/40 18's i fun 40 front and 35 rear so. Thats becuase with lower air in the shoulders of my front tires where wearing faster. so i put more air in.
225/45/17
Rich10 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tire PSI for Kumho Ecsta MX 225-45-17 08 WRX veener79 Autocross 15 04-06-2009 02:53 PM
Kumho Ecsta MX 225/40/18 $375 jsalicru Private 'For Sale' Classifieds 13 02-07-2005 09:21 PM
FS: Kumho Ecsta MX 225/40/18 jsalicru Private 'For Sale' Classifieds 11 01-28-2005 03:23 AM
fs: Brand new Kumho Ecsta MX 225/40/18 vtecvoodoo Private 'For Sale' Classifieds 10 12-09-2003 11:39 PM
fs: 225/40/18 Kumho Ecsta MX vtecvoodoo Private 'For Sale' Classifieds 22 11-21-2003 12:09 AM


All times are GMT -4. The time now is 06:27 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.