Tps

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Jan 5, 2009 | 12:05 PM

1st time owner

Thread Starter

Instructor

Joined: Dec 2007

Posts: 241

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From: Philadelphia Pa

Tps

Does anyone know how accurate the TPS are,,I have what I think is a pretty good tire gauge but I sometimes get up to a 2lb difference between the sensor and the gauge. 08 C-6 thanks

Jan 5, 2009 | 12:46 PM

dgrant3830

Tech Contributor

Joined: Dec 2006

Posts: 10,962

Likes: 29

From: Van Buren Arkansas

Wounded Warrior Escort '11

I've used two different digital guages and both agree with the onboard pressure indication in my '07. They also worked with my '99.

Jan 5, 2009 | 05:19 PM

AintQik

Drifting

Joined: Jul 2005

Posts: 1,969

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From: NJ

I've seen a 1~2 pound difference on the gauge I use. No big deal to me, but I'm just a former Philly guy stuck out in the boondocks. I know yous can be pretty uptight

Jan 5, 2009 | 05:47 PM

dennis50nj

Race Director

Joined: Mar 2005

Posts: 11,549

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From: Southampton NJ

Quote:

Originally Posted by AintQik

I've seen a 1~2 pound difference on the gauge I use. No big deal to me, but I'm just a former Philly guy stuck out in the boondocks. I know yous can be pretty uptight

Jan 5, 2009 | 06:40 PM

SUB VETTE

SUBVETTE

Joined: Jul 2006

Posts: 3,841

Likes: 93

From: San Diego CA

I use an analog gauge which I set pressures with. The TPS reads about 1-2 psi less. Could be that my gauge needs calibrating, but I suspect that the TPS is less accurate.

Jan 6, 2009 | 12:29 AM

siffert

Safety Car

Joined: Aug 2006

Posts: 4,206

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From: Makena, Maui & NM

Quote:

Originally Posted by SUB VETTE

I use an analog gauge which I set pressures with. The TPS reads about 1-2 psi less. Could be that my gauge needs calibrating, but I suspect that the TPS is less accurate.

I have an analog and a digital that talks to me

and they always read a 2 psi difference too.

Jan 6, 2009 | 12:47 AM

oldmansan

Safety Car

Joined: Sep 2007

Posts: 4,359

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From: Los Alamitos California

St. Jude Donor '09

I have a very nice gauge that is also 1-2 pounds different than the TPS.

San

Jan 6, 2009 | 08:39 PM

Wrenchen

Instructor

Joined: Jan 2006

Posts: 237

Likes: 30

From: Albuquerque New Mexico

They don't seem to account for altitude. Other than that they seem to be correct.

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Jan 6, 2009 | 09:33 PM

miwung

Pro

Joined: Nov 2006

Posts: 505

Likes: 0

From: North Jersey

I switched to nitro fill and got a really good gauge and I always read 30 pounds all the way around. TPS reads from 28 to 30 pounds usually.

Jan 6, 2009 | 09:38 PM

#10

cadguymark

Safety Car

Joined: Sep 2006

Posts: 4,566

Likes: 6

From: Land of 10,000 taxes

Quote:

Originally Posted by Wrenchen

They don't seem to account for altitude. Other than that they seem to be correct.

what exactly are you saying? The mass of air in the tire dos not change as you change elevation, neither does the volume of the tire, so the pressure remains the same, the only thing remaining that can change the pressure is temperature change, which likely goes up due to the heat of rolling resistance, the altitude change just does not figure into it directly unless there is a large temperature change accompaning the altitude change

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