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Old 05-18-2013, 07:27 AM   #15
Southern Comfort
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Quote:
Originally Posted by Chris97b View Post
I was under the impression that the only advantage to running high pressures for high speeds was to reduce rolling resistance due to a smaller contact patch. I'm not exactly a physics expert, but wouldn't this just make it easier/faster 0-100mph? Is there any other advantage to high pressures as opposed to standard 32-35psi for high speed operation?

Sorta OT I know, but inquiring minds want to know
The various speed/psi recommendations are a compromise of wear, ride and performance.

There is some good info about this at
http://www.tirerack.com/tires/tirete....jsp?techid=72
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Old 05-18-2013, 11:57 AM   #16
Tara Martin
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Quote:
Originally Posted by Firefighter View Post
I run mine at 30 psi cold. It goes up to about 33 with mixed driving ie. city/highway. If I do a 100+ mph blast I don't think twice about my tire pressure. If I was going to do a top speed run at an event I would bump up the psi. I'd research what to psi use.


The car came with roughly 36 psi or 38 psi and it felt like a frigging stage coach.

My dealer delivered my car to me with 44 psi in all the tires. A dime felt like a speed bump! I run them now about 34-35 cold.

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Old 05-22-2013, 06:39 AM   #17
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I got the car from the dealer with 36 psi all around. On the streets, once warm, it would go to 38-39 psi. I felt like the car broke loose to easy given the tire size and power.

I've sinced lowered it to 32 psi all around....traction in the dry is much improved.

Traction in the wet still sucks.
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Old 05-23-2013, 02:14 AM   #18
CrystalRedTintcoat


 
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COLD (just checked at 12:08am)

29-30
29-31

Looks like I better equalize this and bump it up! I'm going to set all four to 32 cold.
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Old 05-23-2013, 07:43 PM   #19
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I just noticed 32 is the recommended pressure on the OnStar app as well.
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