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Tire & Wheel Forum sponsored by The Tire Rack |
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12-03-2004, 07:24 PM | #1 |
Scooby Specialist
Member#: 40736
Join Date: Jul 2003
Chapter/Region:
MAIC
Location: Pittsburgh, PA / FairFax, VA
Vehicle:2005 WRX STI Aspen White |
New tires, which tire pressure to go by, tire or car?
Just got Pzero's and wonder which tire pressure to go by? The one that is listed on tirerack for the Pirelli tires or do I use what the inside of the driver's door states for recommended tire presssure. Any pros or cons to using either or? I just don't want a blown tire and end up getting killed.
Thanks a bunch :-) -Nigel
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12-03-2004, 07:44 PM | #2 |
Scooby Newbie
Member#: 52569
Join Date: Jan 2004
Vehicle:2004 STi |
i have mine at ~40psi upfront and ~36psi in the rear and it's riding well for me.
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12-03-2004, 08:14 PM | #3 |
Scooby Specialist
Member#: 25323
Join Date: Sep 2002
Chapter/Region:
MWSOC
Location: St. Louis, MO
Vehicle:2003 WRX Wagon Black |
Always check the side of the tire for the max pressure of the tire, and stay under that. I'm running no more than 40 on my stock sized Continentals.
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12-03-2004, 09:58 PM | #4 | |
Scooby Specialist
Member#: 40736
Join Date: Jul 2003
Chapter/Region:
MAIC
Location: Pittsburgh, PA / FairFax, VA
Vehicle:2005 WRX STI Aspen White |
Quote:
Is there a reason to have more psi in the front than the rear... I always thought they had to be uniform for all four? I'm gonna check now on the tire and see what max PSI is. Thanks, -Nigel |
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12-03-2004, 10:13 PM | #5 | |
Scooby Specialist
Member#: 60682
Join Date: Apr 2004
Chapter/Region:
NWIC
Location: Seattle, WA
Vehicle:2006 WRX WRB |
Quote:
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12-03-2004, 10:45 PM | #6 |
Scooby Specialist
Member#: 25323
Join Date: Sep 2002
Chapter/Region:
MWSOC
Location: St. Louis, MO
Vehicle:2003 WRX Wagon Black |
Weight distribution is the reason, you're right RankFrank. About 4lbs higher in front seems to be the average 'round these parts. Helps kill the understeer, more grip for the fronts.
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12-04-2004, 01:05 PM | #7 |
Scooby Newbie
Member#: 52569
Join Date: Jan 2004
Vehicle:2004 STi |
^^^^ what Groceries said
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12-04-2004, 02:33 PM | #8 |
NASIOC Supporter
Member#: 30669
Join Date: Dec 2002
Chapter/Region:
Tri-State
Location: USA, North NJ, 07456
Vehicle:1998 Legacy 2.5GT Silver Sleeper BK, 5MT |
1-the pressures listed on your car only work for the OEM tires or a similar one.
2-I use the rule of ~80% of max inflation as listed on the tire for normal use. Thus if it has a max of 51psi, I use ~41psi. This is a good starting point and adjust from there. I also use a ~4psi spread front to rear for removal of understeer. |
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