Do you check pressure with gauge or rely on tpc?
Registered User
Joined: Apr 2011
Posts: 143
From: Texas
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My tpc shows around 44 psi on all four tires, but I was going to adjust them to what they should be. Should I use a gauge or use the tpc? My guess is the old owner had the tires changed and never adjusted the pressure. Most tire companies I've used simply make the pressure average on all four and never use the information in the door for tire pressure. The tire valve caps were all different and were the cheap kind so that was a clue.
From what I read, it should be 33/39.
thanks
From what I read, it should be 33/39.
thanks
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Joined: May 2009
Posts: 3,335
From: Rye, NY
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Registered User
Joined: Dec 2012
Posts: 177
From: Key West
Rep Power: 22
wow, lot's of great info!
I have summer tires, 19", and key west has a lot to desire in service from tire companies. More than once I've had to have them flip a tire because they didn't read the tire remarks, they had mounted them backwards on my old mustang.
I'll try the door sill cold pressures, 39/44 then see what happens. Otherwise I'll try a bit lower. Right now I feel every pothole a dimple big.
I have summer tires, 19", and key west has a lot to desire in service from tire companies. More than once I've had to have them flip a tire because they didn't read the tire remarks, they had mounted them backwards on my old mustang.
I'll try the door sill cold pressures, 39/44 then see what happens. Otherwise I'll try a bit lower. Right now I feel every pothole a dimple big.
Registered User
Joined: Aug 2008
Posts: 1,282
From: Pacific Northwest
Rep Power: 70
My tpc shows around 44 psi on all four tires, but I was going to adjust them to what they should be. Should I use a gauge or use the tpc? My guess is the old owner had the tires changed and never adjusted the pressure. Most tire companies I've used simply make the pressure average on all four and never use the information in the door for tire pressure. The tire valve caps were all different and were the cheap kind so that was a clue.
From what I read, it should be 33/39.
thanks
From what I read, it should be 33/39.
thanks
When I swap tires (winter/summer or reverse) I air up the cold tires to the pressures the TPMS system wants in the +/- display, after having told it what type tires I have installed and the system has relearned them. Do not use the PSI numbers from TPMS to set tire pressures, those are informational only. I then verify the pressure is where it should be with a own gauge at the stem.
Registered User
Joined: May 2009
Posts: 3,335
From: Rye, NY
Rep Power: 202
wow, lot's of great info!
I have summer tires, 19", and key west has a lot to desire in service from tire companies. More than once I've had to have them flip a tire because they didn't read the tire remarks, they had mounted them backwards on my old mustang.
I'll try the door sill cold pressures, 39/44 then see what happens. Otherwise I'll try a bit lower. Right now I feel every pothole a dimple big.
I have summer tires, 19", and key west has a lot to desire in service from tire companies. More than once I've had to have them flip a tire because they didn't read the tire remarks, they had mounted them backwards on my old mustang.
I'll try the door sill cold pressures, 39/44 then see what happens. Otherwise I'll try a bit lower. Right now I feel every pothole a dimple big.
Thread Starter
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Registered User
Joined: Dec 2012
Posts: 177
From: Key West
Rep Power: 22
I tried the 39/33 and the car tells me I have a flat tire, lots of red exclamations and -amounts for air pressure. I put it up to 42/38 and the car system is happy.
I have a $20 analog gauge, but I just ordered a $40 digital gauge to be more accurate.
I have a $20 analog gauge, but I just ordered a $40 digital gauge to be more accurate.
Registered User
Joined: Feb 2010
Posts: 1,889
From: SoCal
Rep Power: 161
hmmm... try re-setting with 'partial load' to get rid of the warning lights
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