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Old 01-14-2004, 09:42 AM   #1
Buckeye Kid
Scooby Newbie
 
Member#: 41369
Join Date: Aug 2003
Vehicle:
2002 Subaru WRX
Silver

Default Low Tire Pressure

I need to find out what PSI I should be running in my tires. They have gotten very low with the winter tempature change and I need to refill them.

I live in Columbus, Ohio and the ambient tempature here is about 15 to 35 degrees F. I have a 2002 Subaru WRX sedan with no suspension modifications done to it. I have removed the OE rims and replaced them with 18" Rota Subzeros purchased from Subydude. I have Nitto NT-555 "Extreme ZR" tires on the vehicle. The wheels I have on the rims I purchased from Tire Rack. They are sized 225/40 ZR18 92W.

I found an air machine at a service station and filled each tire up to 30 PSI, but the front tires still seem to be a bit 'compressed'. The rear tires now look perfect. I have also noticed some tire wall wear from driving with low pressure in all four tires. I do not want to damage my tires, but I am more concerned about having uniform tire diameters and not damaging the AWD system on my vehicle.

Anyways, I will more closely monitor my tires and the PSI in the future, but I need to know what to fill them up to when I do service them. Thanks!
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Old 01-14-2004, 10:05 AM   #2
suby_dude
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Member#: 17397
Join Date: Apr 2002
Chapter/Region: BAIC
Location: Fremont, CA
Vehicle:
many '02 Rex,'13 FRS
WRB, White

Default

Buckeye Kid - side wall wear is usually because your tire pressure is too low for the kind of driving you are doing.

if you are just doing 'regular' street driving and see tire wall wear... you are definately running on very low PSI.

i usually run mid 30s...

on street i usually run 34 front/ 36 rear

at the track i usually have a 4 psi difference between the front rear

i think if you stay in the mid 30s you should be fine... play around w/ what kind of setting suites your driving best.

hope that helps!

and can you upload some pix on my gallery please ... http://www.subydude.com/gallery/

thanks!

SD
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Old 01-14-2004, 10:14 AM   #3
Buckeye Kid
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Member#: 41369
Join Date: Aug 2003
Vehicle:
2002 Subaru WRX
Silver

Default

Perfect! Thats exactly what I needed to know. Thanks again SD!

I have been meaning to take a few digital photos of my vehicle. If I do, should I simply e-mail them to you and have you post them or is there something I need to do on my end?
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Old 01-14-2004, 10:18 AM   #4
Buckeye Kid
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Member#: 41369
Join Date: Aug 2003
Vehicle:
2002 Subaru WRX
Silver

Default

Ah I see how to post images on your website... Thanks for everything SD.
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