Tires pressure plate picture CT/4s

[lcarron]

Hi,

I moved from 21 to 20 but the tires pressure plate is for 21 inches. When I compared the manual and the tire cluster on the dash the pressure difference give me contradicting information.
Can someone with a CT 4/4s having 20 inches wheel delivered take a picture of the tires pressure plate from the driver door frame?

Thank you

Sponsored

 

[Tooney]

Periodically, PCNA issues TSBs about approved wheels and tires. Included in the TSB are recommended tire pressure charts. I believe the information on the charts is what gets displayed in PCM.
The most recent TSB posted at NHTSA on this I am aware of is dated January, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10231383-0001.pdf

You may want to check with dealer to see if there is a later version.

 

[lcarron]

Thanks. The issue is only with the front. The TSB or the manual says 37 psi. The PCM shows -3 psi when it shows 38. then it should be 41 PSI.

 

[satchurator]

The charts in the US manual / TSBs are more comprehensive than the door sticker.

Have you updated the TPMS settings in the PCM to indicate the change in wheel size, tire type, full/partial load etc?

 

[wmras]

Periodically, PCNA issues TSBs about approved wheels and tires. Included in the TSB are recommended tire pressure charts. I believe the information on the charts is what gets displayed in PCM.
The most recent TSB posted at NHTSA on this I am aware of is dated January, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10231383-0001.pdf

You may want to check with dealer to see if there is a later version.

21" summer Tires on our 2020 Turbo S inflated to the values in this table agree with the PSM within 1 psi. We inflate all four tires to 40 psi (partial load, two people and groceries) and the PSM tire pressures are never off by more than 1 psi.

Sponsored