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Topic: Tire Pressures

in Forum: C6 Handling Components

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Tire Pressures (1/7)
 9/20/07 3:36pm
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New Port Richey, FL - USA

2005 Lemans Blue Coupe.

Joined: 5/24/2007
Posts: 5

I've got the original tires with the Nitro-fill. Leaving the garage the pressures read 26-27 psi. After about 10 miles they are reading 31. Am I better off this way or should I have a higher cold pressure and 31+ after ten miles. Could this be an indication that the tires are filled with air instead of nitrogen? Any thoughts would be great!

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Tire Pressures (2/7)
 10/2/07 12:35pm
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Baltimore, MD - USA

2006 C6 Coupe, Lemans Blue

Joined: 4/27/2007
Posts: 21

I spoke with the engineers at Goodyear some time back and was told for optimum tire wear and handling the tires should be filled to 32 lbs. cold. and checked frequently since pressure will change with ambient temperatures. I did not discuss nitrogen fill with them though. I have some friends that are showing extreme tire wear using the factory recommended pressures. The Goodyear folks told me that the factory recommended pressure setting is for ride only and not tire wear. I didn't notice any real difference in the ride of the car and my tires are not showing any uneven or extreme wear.
Tire Pressures (3/7)
 10/17/07 2:03am
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Supply, NC - USA

2006 Monterey Red Coupe / 2013 Night Race Blue Metallic Coupe with Cashmere Interior.

Joined: 8/29/2007
Posts: 12

I have an 06 with over 12000 miles and I keep the tires with the recommended 30 PSI cold pressure using normal air. The EMT stock tires do change pressure quickly, and after just 5 miles they normally go up 1 or 2 PSI. Wear has been great and the tires look like new with good ride and handling. I do have to adjust the pressures with the changing environmental termperatures on a regular basis. I have checked a few tire gauges, and found some discrepancies. I now have a digital gauge that agrees with the DIC. Had to spend $20, but after checking numerous gauge inputs, I have confidence in the DIC.

|UPDATED|10/16/2007 11:03:53 PM (AZT)|/UPDATED|
Tire Pressures (4/7)
 10/13/07 7:47pm
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Prescott, AZ - USA

60 with both tops 68 with t-tops

Joined: 5/20/2003
Posts: 151

I have an 06 with the F55 suspension and the car's tire pressure indicators do not agree with my Burdon tube hand tire pressure gauge. Cold at 31 with my hand gauge gets me 28 psi on the DIC and a month later the monthly car check by On-star squawks that my tires are low. Anyone else disbelieve their DIC indicators? |headscratch|

Curt Franz LeMans Blue Coupe born on Sept 15th, 2005
Tire Pressures (5/7)
 10/16/07 12:07pm
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San Diego, CA - USA

Corvette Z51 manual transmission 2007 Monterrey Red

Joined: 8/10/2007
Posts: 5

I agree that the DIC is inaccurate. I use a very accurate hand gauge, set the tires at 30 cold and the readout tells me 28. Go figure! |ohwell|
Tire Pressures (6/7)
 10/17/07 8:59am
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merritt island, FL - USA

2007 C-6 coupe

Joined: 6/22/2007
Posts: 4

My TPS read about 1 PSI lower than my gauge. At 30 PSI cold, I was wearing the center of the tires faster than the edges. Currently running 28 cold, but I believe the important number is HOT pressure.
Here in Florida the road itself can get up to 130 F in the summer, and the tires get at least that hot. Those in cooler climates might never see tire temps that high.
Tire Pressures (7/7)
 4/1/09 6:01pm
Stephen P
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Cedar Rapids, IA - USA

1999 C5 Coupe 1SC Z51 2002 C5 Coupe 1SC Z51 C6 Convertible 3-12-07. Triple-Black Convertible. 3LT Z51 Paddle-shift Auto. 2013 Corvette Anniversary/Collectors Edition Convertible 4LT Six Speed purchased 10-6-2012

Joined: 3/13/2004
Posts: 33

Have the Dealer calibrate your on-board Tire Pressure Monitor using an accurate Pressure Guage.
My digital display reads "30" when my reference pressure guage reads "30".
Remember your High School Physics.  Pressure is proportional to Temperature.
A change in Pressure (Temperature) will follow a change in Temperature (Pressure).
Nitrogen fill for tires eliminates the moisture content in air.  This gives a less responsive effect since water expands at a different rate than a dry gas fill.Geek
Bought new tires at 15,000 miles by checking and adjusting tire pressure every time outside ambient temperature varied more that five (5) degrees.

Stephen P
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