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Re: Tire Pressure (jstro)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>jstro</b> »</i></TD></TR><TR><TD CLASS="quote">36 to 39 lbs</TD></TR></TABLE><p>Too high for summer.
 

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Re: Tire Pressure (GrecianVolvo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>GrecianVolvo</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Too high for summer.</TD></TR></TABLE><p>debatable.<p>What do you prefer, handling, fuel economy, tire longevity? Sidewall size?
 

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i would say...what tire do you have first...in my 235/40/18 R wheels i use 36
 

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Re: (volvos60t5x)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>volvos60t5x</b> »</i></TD></TR><TR><TD CLASS="quote">i would say...what tire do you have first...in my 235/40/18 R wheels i use 36</TD></TR></TABLE><br>+1 tire is the variable here, more than anything else.
 

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Re: (Bender)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Bender</b> »</i></TD></TR><TR><TD CLASS="quote"><br>+1 tire is the variable here, more than anything else.</TD></TR></TABLE><p>I also agree. However, I was going by the typical S60 size which is 205/55-16, 215/55-16 or 235/45-17.<p>You do not want to be over 36 psi if not loaded heavily and during high heat temps.<p>In my wagon (FWD not AWD) I always maintain 34 to 36 (if not loaded) and I have always gotten 40K to 45K with my tires (235/45-17).<p>I check/adjust tire pressure every 15 days and rotate religiously ever 7,500 miles.
 

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Re: (GrecianVolvo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>GrecianVolvo</b> »</i></TD></TR><TR><TD CLASS="quote">You do not want to be over 36 psi if not loaded heavily and during high heat temps.</TD></TR></TABLE><br>Interesting. I suppose it's somewhat common sense, but what's your reasoning exactly?<p>I had my tires running at around 35 psi. Checked 'em, and they were at 40! Shop must have pumped them up for me? I chalked them, and they still seemed to be running fine... <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/confused.gif" BORDER="0"><p>(215/55/16 ContiExtremeContacts, BTW)
 

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Re: (Bender)

Car had been sitting. Was maybe 80 degrees outside.
 

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Re: (StarmanDXE)

With 18'' pegs i like a solid 36 psi for summer. Do NOT overinflate theyll bubble sidewalls very easy. Truth time: i first got the pegs i was psyched on em pumped to 40 psi because the feel was tighter which it is but i bubbled both passenger tires cost me alot of money. dont want it to happen to any of you not worth it. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/tongue.gif" BORDER="0">
 

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Re: (StarmanDXE)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>StarmanDXE</b> »</i></TD></TR><TR><TD CLASS="quote">Car had been sitting. Was maybe 80 degrees outside.</TD></TR></TABLE><p>Remember Air Expands when warm<p>I run mine at around 35-38psi, I have 235's/17"<p>Been getting good gas mileage also, <p>and if you read the Fuel door, the option air pressure is 38/38 (full loaded I should say)<p>
 

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Re: (Cjones16)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Cjones16</b> »</i></TD></TR><TR><TD CLASS="quote">Remember Air Expands when warm</TD></TR></TABLE><br>So, p2 = p1*(T2/T1) (assuming constant volume)<p>If you start at 32 deg F and go up to 80 deg F, that's an increase in pressure of ~10%. If you start at 80 deg F and go up to 120 deg F, that's an increase in pressure of ~8%.<p>Therefore if you start at 35 psi, you'll end up at ~38.5 psi. If you start at 38 psi, you'll end up at ~42 psi.
 

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Re: (StarmanDXE)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>StarmanDXE</b> »</i></TD></TR><TR><TD CLASS="quote"><br>So, p2 = p1*(T2/T1) (assuming constant volume)<p>If you start at 32 deg F and go up to 80 deg F, that's an increase in pressure of ~10%. If you start at 80 deg F and go up to 120 deg F, that's an increase in pressure of ~8%.<p>Therefore if you start at 35 psi, you'll end up at ~38.5 psi. If you start at 38 psi, you'll end up at ~42 psi.</TD></TR></TABLE><p>Nice <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 
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