Tire PSI
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Heel & Toe
Joined: Feb 2006
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Tire PSI
I am curious about what I should set my tire pressure at. In the morning when I get started up, it is at 30 psi, but in the afternoon when the temp heats up they are at 35 and 36 psi. Is this good or should I adjust.
Thanks
Raptor
Thanks
Raptor
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Joined: Feb 2006
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From: Middle Granville New York
Originally Posted by f22-Raptor
I am curious about what I should set my tire pressure at. In the morning when I get started up, it is at 30 psi, but in the afternoon when the temp heats up they are at 35 and 36 psi. Is this good or should I adjust.
Thanks
Raptor
Thanks
Raptor
Drifting
Joined: Jun 2005
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That's normal. I usually set mine so that it'll be about 30 PSI at the coolest part of the day (which is usually first thing in the morning). That means putting in a little in the fall and often taking out a bit in the spring.
Expect about 1 PSI per 10 degrees F ambient temp, another 1 or 2 PSI for direct sunlight, and 2 or 3 PSI for normal driving temperatures.
Expect about 1 PSI per 10 degrees F ambient temp, another 1 or 2 PSI for direct sunlight, and 2 or 3 PSI for normal driving temperatures.
Race Director
Joined: Dec 2005
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As JNJ said cold PSI of 30-31 is where you want to be. Ambient temperatures can have a noticeable effect on tire pressures even when they are at rest. So even "cold tires" can see a fluctation of several PSI on a car at rest if the temperatures swing 50 degrees in a day.
Racer
Joined: May 2006
Posts: 490
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From: Macon Georgia
St. Jude Donor '08
According to most major tire makers you should:
Set tire psi to what the door jamb/owners manual says to when cold. In this case 30 front and back. As to the definition of cold. Driven less than one mile or stationary for at least three hours.
The Tire Guy
Set tire psi to what the door jamb/owners manual says to when cold. In this case 30 front and back. As to the definition of cold. Driven less than one mile or stationary for at least three hours.
The Tire Guy
Retired & lovin' it!
Joined: Mar 2005
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From: Jackson NJ
I know this reply will get me "flamed", but I've always believed in going a bit on the high side for tire pressures. Yes, the door tag on my '05/Z51 says 30 lbs, but I use 32 lbs cold. Once on the road & warmed up, they'll all run 35/36 which seems to be ideal.
Team Owner
Joined: Dec 2002
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From: San Francisco CA
Originally Posted by Dave S
I know this reply will get me "flamed", but I've always believed in going a bit on the high side for tire pressures. Yes, the door tag on my '05/Z51 says 30 lbs, but I use 32 lbs cold. Once on the road & warmed up, they'll all run 35/36 which seems to be ideal.
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Le Mans Master
Joined: Sep 2004
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From: Shiloh Ohio
Originally Posted by Tire Guy
According to most major tire makers you should:
Set tire psi to what the door jamb/owners manual says to when cold. In this case 30 front and back. As to the definition of cold. Driven less than one mile or stationary for at least three hours.
The Tire Guy
Set tire psi to what the door jamb/owners manual says to when cold. In this case 30 front and back. As to the definition of cold. Driven less than one mile or stationary for at least three hours.
The Tire Guy
I do not intend to flame here but why does this question get asked so often? Don't they have drivers ed anymore? It is on the door jamb on all the cars I have owned.
Race Director
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From: Virginia Bch VA
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St. Jude Donor '06
Originally Posted by Buffy
That's normal. I usually set mine so that it'll be about 30 PSI at the coolest part of the day (which is usually first thing in the morning). That means putting in a little in the fall and often taking out a bit in the spring.
Expect about 1 PSI per 10 degrees F ambient temp, another 1 or 2 PSI for direct sunlight, and 2 or 3 PSI for normal driving temperatures.
Expect about 1 PSI per 10 degrees F ambient temp, another 1 or 2 PSI for direct sunlight, and 2 or 3 PSI for normal driving temperatures.
Set for AM temps.
Racer
Joined: May 2006
Posts: 490
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From: Macon Georgia
St. Jude Donor '08
Originally Posted by shurite44
I do not intend to flame here but why does this question get asked so often? Don't they have drivers ed anymore? It is on the door jamb on all the cars I have owned.The Tire Guy
Team Owner
Joined: Dec 2002
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From: San Francisco CA
Originally Posted by double eagle
They come in handy at times.
Le Mans Master
Joined: Sep 2004
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From: Shiloh Ohio
I would miss the tire sensors if I did not have them. I have decided to put sensors in my drag radials also. Now I need to find a bartec tool cheap.
I know it is easy just to check the air pressure. But I come from an aviation background and I love gauges and info. I am going to love playing with the nav stuff, even though the primary place I drive in 10 miles to the track and back on a back road.
I know it is easy just to check the air pressure. But I come from an aviation background and I love gauges and info. I am going to love playing with the nav stuff, even though the primary place I drive in 10 miles to the track and back on a back road.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
Originally Posted by shurite44
I would miss the tire sensors if I did not have them. I have decided to put sensors in my drag radials also. Now I need to find a bartec tool cheap.
I know it is easy just to check the air pressure. But I come from an aviation background and I love gauges and info. I am going to love playing with the nav stuff, even though the primary place I drive in 10 miles to the track and back on a back road.
I know it is easy just to check the air pressure. But I come from an aviation background and I love gauges and info. I am going to love playing with the nav stuff, even though the primary place I drive in 10 miles to the track and back on a back road.
Le Mans Master
Joined: Sep 2004
Posts: 7,027
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From: Shiloh Ohio
Originally Posted by LS WON
Then you have to love those old 63 and up Jaguar XKE's.
