27psi or 30psi ???
Thread Starter
Racer
Joined: May 2005
Posts: 295
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From: Kennesaw Ga.
27psi or 30psi ???
I'm new to these factory Run Flat Tires. the book says keep at 30psi. OK, if you do that they seem to heat up 3 more degrees when you drive now your running 33psi which I've read from this form is too high. So the question would be, do you set them at 27psi and let them heat up to 30psi? If you have Run Flats what are you doing? Thanks for your input.
Le Mans Master
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From: Zephyrhills, Florida
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I just read on here today to adjust seasonally so they're running hot at 30, makes sense to me........ you're right , set them cold around 27 or so.........
Safety Car
Joined: Jan 2005
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From: Lake Ridge VA
The recommendations for PSI by the tire companies are usually what is referred to as cold. That means if they recommend 30 PSI, that's what your tires should read when they are stone cold (what they read first thing in the morning, not having been driven on, etc). The companies don't expect you to do the math and compensate for driving.
The factory recommendation is 30 PSI cold, which means just that; not 27.
However, it's all personal choice...some people like to run their tires a bit lower or higher.
The factory recommendation is 30 PSI cold, which means just that; not 27.
However, it's all personal choice...some people like to run their tires a bit lower or higher.
Le Mans Master
Joined: Jun 2002
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From: In the pit, trying to love someone.
WHOOPS! I put 40 in them, just like my BFG's on my SS. BRB, gotta go let some air out...
[edit] And who the hell would have thought that the tires on a Corvette would need different air pressure... thats ridiculous!
[edit] And who the hell would have thought that the tires on a Corvette would need different air pressure... thats ridiculous!
Safety Car
Joined: Jul 2001
Posts: 4,661
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From: Ocean Springs MS
Originally Posted by Mike94ZLT1
WHOOPS! I put 40 in them, just like my BFG's on my SS. BRB, gotta go let some air out...
[edit] And who the hell would have thought that the tires on a Corvette would need different air pressure... thats ridiculous!
[edit] And who the hell would have thought that the tires on a Corvette would need different air pressure... thats ridiculous!
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Race Director
Joined: Dec 2003
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From: Texas
Originally Posted by mrm1149
I just read on here today to adjust seasonally so they're running hot at 30, makes sense to me........ you're right , set them cold around 27 or so.........
, not saying we're right though.....
Le Mans Master
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From: In the pit, trying to love someone.
Originally Posted by fdxpilot
Don't know about your SS, but my 94Z says 32psi, with 35psi recommended for sustained high speed driving. My wife's PT Cruiser calles for 35psi. Almost all the cars I've ever owned had different pressure recommendations.
The tires say 44 psi max pressure on the side, I figured 40 was a safe number.
Race Director
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From: Mustang OK
The Tire Loading Label on the door shows recommendations for cold tire pressures and when they're hot. These recommendations worked well for my neighbor and appear to be working well for me thus far. My neighbor followed these recommendations very closely with his first set of GY run-flats and had over 44k miles on them with some spirited driving when he replaced them. They still had close to 4/32" of tread on them when he replaced them. 
Tire Loading Label - 2002 Coupe:
Tire Loading Label - 2002 Coupe:
Last edited by GrayC5; Jun 18, 2005 at 11:58 PM.
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You set the tires at 30 psi when they are cold - yes they will warm up to about 33-34 psi when hot, but that is normal.
Drifting
Joined: Apr 2005
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From: Lafayette CA
Originally Posted by JDs00PewterCoupe
You set the tires at 30 psi when they are cold - yes they will warm up to about 33-34 psi when hot, but that is normal.
Racer
Joined: Dec 2002
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From: Goose Creek SC
Originally Posted by Mike94ZLT1
The tires say 44 psi max pressure on the side, I figured 40 was a safe number.
Does it ride kind of hard at 40 PSI?
Safety Car
Joined: Dec 2004
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From: Arizona AZ
Originally Posted by Double Aught
During my road trip to Tucson and Chandler, I was reading 35psi all around and my speed varied between 75-90.
