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Discussion Starter · #1 ·
Is it me or does the "Search" function still not work? I know there was talk before about it being fixed.<p>Anyways, I'm trying to find threads on tire pressure on a stock S60R. I've been playing around with the pressure from 34-39psi. This is for daily street driving. What are your experiences?<p>
 

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Re: Tire pressure on R (JT2)

i do around 39 for winter, and maybe 36 for summer.
 

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Discussion Starter · #5 ·
Sorry, I should mention i'm running stock 18's on the pirelli P-zero rubbers.<p>Ya, so far I think 36psi all way round seems to be the best of all for not losing my teeth on potholes. Our roads here suck!<p>Anyone know if the stock Pirelli's have weak sidewalls? <p>Thanks!
 

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Re: (JT2)

Depends on the tires. The Pirelli sidewalls are pretty good so I think you would be safe at 36 psi. On 17" pegs with a VR I run 34 psi on Hankook V4ES XL which seem to have extra tough sidewalls.
 

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Re: (ktm_525)

39psi all the way with my 18" Pegs. The ride is not too rough and definitely not too soft. My roads are pure suck by the way.<p>The higher PSI helps save the Pegs from road hell holes.
 

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Re: (ktm_525)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>ktm_525</b> »</i></TD></TR><TR><TD CLASS="quote">On 17" pegs with a VR I run 34 psi on Hankook V4ES XL which seem to have extra tough sidewalls. </TD></TR></TABLE><p>Running the same tire at 38psi and a bit jarring with the 18's.
 

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Re: (MagoonR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>MagoonR</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Running the same tire at 38psi and a bit jarring with the 18's.</TD></TR></TABLE><br>Agree.<br>It also depends on the tire itself.<br>Different tires work better at different pressures from 33-34 all the way to 38-39.<br>The ROADS you drive on will also dictate how stiff you want to be at
 

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Re: (JRL)

I saw a recommendation somewhere which said "max pressure -10%".<br>That seemed very high, so went for max -20%, which was almost exactly 39psi with 18" Hankook Evo V12s.
 

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Re: (tomedkaz)

If you have side-hop, run the rears about 2 psi lower than the fronts, that will help a TON. I run about 36 psi front and 34 psi rear (COLD PSI) here year-round. I have 17s for both summer and winter tires. <p>At the racetrack I go even LOWER, usually starting around 32 psi cold and lowering again as needed to get about 38-39 PSI HOT. I get ZERO sidewall roll and no uneven wear or shoulder wear.
 

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Re: (Warpedcow)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Warpedcow</b> »</i></TD></TR><TR><TD CLASS="quote">If you have side-hop, run the rears about 2 psi lower than the fronts, that will help a TON. I run about 36 psi front and 34 psi rear (COLD PSI) here year-round. I have 17s for both summer and winter tires. <p>At the racetrack I go even LOWER, usually starting around 32 psi cold and lowering again as needed to get about 38-39 PSI HOT. I get ZERO sidewall roll and no uneven wear or shoulder wear.</TD></TR></TABLE><p>Interesting trick. When I swapped the winter tires off I noticed that the center of the tread is wearing quicker than both edges. Probably a combo of running too high air pressure (35 psi) and lack of hard cornering in the winter months.<p>
 

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Re: (JS60R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>JS60R</b> »</i></TD></TR><TR><TD CLASS="quote">I saw a recommendation somewhere which said "max pressure -10%".<br>That seemed very high, so went for max -20%, which was almost exactly 39psi with 18" Hankook Evo V12s.</TD></TR></TABLE><p>Check the sticker on the gas door. This formula may be outside of the manufacturer's recommended range.
 

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Re: (MagoonR)

I've been using 40 psi in all fours....
 

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I typically run 42psi in my tyres, but I am running Eagle A/S 245s on 17" pegs. Interesting trick about the rears being lower, I'll give that a whirl when my R comes home.<p>
 

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Re: (JT2)

I just put the summer tires on yesterday. Dunlop Sport Max SP, 17". 36 psi all around. Seems good so far. I have Dunlop Winter Sport 3Ds which are set to 34 psi.<p><br><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>JT2</b> »</i></TD></TR><TR><TD CLASS="quote">Sorry, I should mention i'm running stock 18's on the pirelli P-zero rubbers.<p>Ya, so far I think 36psi all way round seems to be the best of all for not losing my teeth on potholes. Our roads here suck!<p>Anyone know if the stock Pirelli's have weak sidewalls? <p>Thanks!</TD></TR></TABLE>
 

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Re: (MagoonR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>MagoonR</b> »</i></TD></TR><TR><TD CLASS="quote"><br>Check the sticker on the gas door. This formula may be outside of the manufacturer's recommended range.</TD></TR></TABLE><p>IMHO, you should stick with the TIRE maker's recommendations, not Volvo's as that is likely specific to the crap OEM Pirellis. <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0">
 

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Re: (Warpedcow)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Warpedcow</b> »</i></TD></TR><TR><TD CLASS="quote"><p>IMHO, you should stick with the TIRE maker's recommendations, not Volvo's as that is likely specific to the crap OEM Pirellis. <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0"> </TD></TR></TABLE><p>agreed, only use the volvo's as a second check to make sure they aren't off wildly. wasn't that the problem with the whole explorer rollover fiasco,,, ford had recommendation too low for the tires and the low pressure combined with weight of suv caused things to delaminate?
 
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