Tire pressure
Thread Starter
Intermediate
Joined: Jun 2006
Posts: 25
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Tire pressure
I pulled my C6 Coupe out of the garage, got on the freeway and had an opprtunity to get on it. After a few seconds, it felt like I had a flat on the front. Needless to say, I got off it and slowed down really fast. I checked my air pressure and had 29 rf and 30 lf. My vette had been in the gargae for about two weeks.
I notice that my tires are always about 29 to 30 lbs when I start driving and then build up to 32 lbs. Is this normal?
Craig
I notice that my tires are always about 29 to 30 lbs when I start driving and then build up to 32 lbs. Is this normal?
Craig
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Normal behavior.
Takes a bit of fiddling to get all the tire pressure sensors to agree precisely.
Consider too that (1) the display rounds to the nearest whole number and (2) psi varies with temperature, including effect of direct sunlight. So the tires on the shady side of the car can show a lower psi.
Ranger
Takes a bit of fiddling to get all the tire pressure sensors to agree precisely.
Consider too that (1) the display rounds to the nearest whole number and (2) psi varies with temperature, including effect of direct sunlight. So the tires on the shady side of the car can show a lower psi.
Ranger
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
I'd check them once in awhile with a good tire pressure gauge. Should read 30 lbs cold. Mine will get up to 34 lbs on a warm day after 25-30 miles of driving. Usually run about 32-33 lbs on an average day.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
Originally Posted by Ranger
Normal behavior.
Takes a bit of fiddling to get all the tire pressure sensors to agree precisely.
Consider too that (1) the display rounds to the nearest whole number and (2) psi varies with temperature, including effect of direct sunlight. So the tires on the shady side of the car can show a lower psi.
Ranger
Takes a bit of fiddling to get all the tire pressure sensors to agree precisely.
Consider too that (1) the display rounds to the nearest whole number and (2) psi varies with temperature, including effect of direct sunlight. So the tires on the shady side of the car can show a lower psi.
Ranger
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
Originally Posted by shopdog
Trust your DIC.
OLM yes we are suppose to wait for it to tell us or at least change oil and filter once a year.
Race Director
Joined: Dec 2005
Posts: 11,342
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From: Carlsbad Ca
Originally Posted by LS WON
Should I do the same for the miles per gallon instead of doing it the old fashion way that I'm used to? Pen, paper, and calculator go by DIC?
OLM yes we are suppose to wait for it to tell us or at least change oil and filter once a year.
OLM yes we are suppose to wait for it to tell us or at least change oil and filter once a year.
The DIC is quite accurate (for what it is.)
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From: Virginia Bch VA
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St. Jude Donor '06
3-4 PSI increase once the tires get hot (driving) is normal.
OM sez 30 psi cold.
But you'll get 1 psi for every 10 deg of air temp. e.g. set to 30 psi @ 60 deg F = 31 psi @ 70 deg F
OM sez 30 psi cold.
But you'll get 1 psi for every 10 deg of air temp. e.g. set to 30 psi @ 60 deg F = 31 psi @ 70 deg F
Melting Slicks
Joined: Jun 2006
Posts: 2,208
Likes: 1
Best overall pressure for the Supercars is supposed to be 33-34#. If you have 30 (factory recommended) cold and run them reasonably well you come up to that range quickly. I like to keep it 31-32 cold, better wear. I've found a variability of 1 # with the TPMS when I show them all equal with a digital gauge, so .5 round up makes sense. As long as it's =< 1 psi, I'm happy.
Race Director
Joined: Jan 2004
Posts: 18,726
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From: Bergen County, NJ
Originally Posted by JFTaylor
3-4 PSI increase once the tires get hot (driving) is normal.
Also, I have 3 tire gauges and they give me 3 different readings.
I assume the DIC is accurate.
Pro
Joined: Dec 2004
Posts: 530
Likes: 2
From: Colorado Springs CO
Originally Posted by csp46
I pulled my C6 Coupe out of the garage, got on the freeway and had an opprtunity to get on it. After a few seconds, it felt like I had a flat on the front. Needless to say, I got off it and slowed down really fast. I checked my air pressure and had 29 rf and 30 lf. My vette had been in the gargae for about two weeks.
I notice that my tires are always about 29 to 30 lbs when I start driving and then build up to 32 lbs. Is this normal?
Craig
I notice that my tires are always about 29 to 30 lbs when I start driving and then build up to 32 lbs. Is this normal?
Craig
