PSI Tire Question
Thread Starter
Racer
Joined: Sep 2007
Posts: 417
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From: St. Albert
PSI Tire Question
OK I need to know how much PSI my tires should be at. The tires read they should be a 50 psi but when they installed them they put in 30 some are now reading 25 is that too low? I do have nitrogen in them. One more question the sensors need replacing they keep changing tire pressure amounts is that normal and where can you buy new ones, are they expensive? 
Race Director
Joined: Jul 2007
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From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
30 psi when cold is correct... Tire may say 50, But GM says 30 on the Corvette.
Why use Nitrogen? Your tires won't get that hot it see any benefit?
There are 2 types of sensors, Depending on your year, The early years were really costly, Try the for sale section and the big auction site or Gene Cully.
Why use Nitrogen? Your tires won't get that hot it see any benefit?
There are 2 types of sensors, Depending on your year, The early years were really costly, Try the for sale section and the big auction site or Gene Cully.
Last edited by Mr.Bill; Jun 24, 2008 at 08:51 AM.
Racer
Joined: Mar 2008
Posts: 328
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From: Houston TX
St. Jude Donor '08
32 psi hot
If I remember correctly, your tires should be 32 psi when hot. That's about 28 psi cold. The sensors do change a bit. And I have noticed that there will be a difference between tires. I think that is because of the update time. I've noticed that after being on the road for 30 minutes or so, that they will read correctly and be the same temperature. 
Le Mans Master
Joined: Sep 2007
Posts: 7,604
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From: Belleville Il
At least on my 2000 FRC 25 brings low pressure alarm,,42 high pressure alarm.I run mid 30s hat for sharp handling and better MPG.Some will take issue with that but works for me! I drop the rears to 26 to 28 for the strip(as stated 25-6 brings low pressure)
Race Director
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From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19
NCM Sinkhole Donor
RECOMMENDED inflation is just that - recommended. I would start with 30psi cold. For me, living in the desert where ambient temperatures exceed 110 degrees on a routine basis, and the pavement temps are well into the 150 degree range, I run 27 psi cold in the summer. But just because that's what works for me, that doesn't mean that's whats best for you. Experiment until you find the ideal scenario.
That's right, I adjust my tire pressure depending on the conditions and temperatures. I sound smart right? Just watch a race on TV - the tire guy is constantly monitoring the pavement temperatures as well as the tire temperatures to adjust the pressure that will give the best combination of handling and longevity.
That's right, I adjust my tire pressure depending on the conditions and temperatures. I sound smart right? Just watch a race on TV - the tire guy is constantly monitoring the pavement temperatures as well as the tire temperatures to adjust the pressure that will give the best combination of handling and longevity.
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Race Director
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From: HOW FAST WAS I GOING OFFICER? Los Angeles Hating GM Dealership Service Dept.'s Since Sept. 2004
St. Jude Donor '04-'05-'06-'07
Oh man! I just came from the start of a battery war thread...
... Now the PSI war thread pops up!
The sensors go to sleep, so the reading will vary from hot to cold. I wouldn't worry just yet.
FWIW, check your pressure when the tires are hot... use the same gauge (I don't solely rely on the TMPS).
That's aaalllllll I'm sayin'... Peace
Dave
... Now the PSI war thread pops up!
The sensors go to sleep, so the reading will vary from hot to cold. I wouldn't worry just yet.
FWIW, check your pressure when the tires are hot... use the same gauge (I don't solely rely on the TMPS).
That's aaalllllll I'm sayin'... Peace
Dave
Last edited by MyVetteDream; Jun 24, 2008 at 01:36 PM.
