QUICK QUESTION help!!

willguidry · 07-24-2005, 09:37 AM

I've got a set of S03's and they are rated to not excede 50PSI.

Currently, they are just under 30PSI.

What is the correct PSI for these tires, or tires in general for both performance and gas mileage?

BTW the are on 17' rota SDR's.

Cheers!

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gregr01 · 07-24-2005, 10:20 AM

Look on the inside driver's door jam. F & R recommended psi will be listed there.

Use that as a starting point, and adjust up by a few psi each time until you find a setting that gives you good performance and mpg.

You shouldn't need to go anywhere near the max rating for street driving... tops 44/40 f/r or so.

Mine's recommended at 36/30 f/r, and I use 38/32 "daily driving."

Mulder · 07-24-2005, 10:27 AM

The max pressure shown on the tire sidewall is just that. The tire should never be inflated to that pressure. Remember that as the tires heat up the pressure will increase by up to 4PSI or so depending on temperature.
Follow gregr's advice.

rainwrx · 07-24-2005, 12:13 PM

What greg says...the max psi on the tire is cold pressure, so technically you could inflate to that pressure and be fine as far as the tire is concerned. My tires indicate max at 51psi, my door jam says 32 front and 29 rear. I run with 38 front and 34 rear.

07-24-2005, 09:37 AM	#1
willguidry Scooby Specialist Member#: 16388 Join Date: Mar 2002	QUICK QUESTION help!! I've got a set of S03's and they are rated to not excede 50PSI. Currently, they are just under 30PSI. What is the correct PSI for these tires, or tires in general for both performance and gas mileage? BTW the are on 17' rota SDR's. Cheers! * Registered users of the site do not see these ads.

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07-24-2005, 10:20 AM	#2
gregr01 Scooby Specialist Member#: 49333 Join Date: Nov 2003 Chapter/Region: SWIC Location: Phoenix AZ Vehicle: 04 STi java pearl black	Look on the inside driver's door jam. F & R recommended psi will be listed there. Use that as a starting point, and adjust up by a few psi each time until you find a setting that gives you good performance and mpg. You shouldn't need to go anywhere near the max rating for street driving... tops 44/40 f/r or so. Mine's recommended at 36/30 f/r, and I use 38/32 "daily driving."

07-24-2005, 10:27 AM	#3
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 WRX 05 GTO/11 Sonata(!)	The max pressure shown on the tire sidewall is just that. The tire should never be inflated to that pressure. Remember that as the tires heat up the pressure will increase by up to 4PSI or so depending on temperature. Follow gregr's advice.

07-24-2005, 12:13 PM	#4
rainwrx Scooby Specialist Member#: 68955 Join Date: Aug 2004 Chapter/Region: South East Location: Orlando, FL Vehicle: 2005 WRX Hybrid Needs Paint	What greg says...the max psi on the tire is cold pressure, so technically you could inflate to that pressure and be fine as far as the tire is concerned. My tires indicate max at 51psi, my door jam says 32 front and 29 rear. I run with 38 front and 34 rear.