Bluetooth TPMS reading low

[ysaliens]

2021 Model 3P.

In 2021, they switched to the new bluetooth TPMS sensors. I'm noticing the car is reading tire pressures low.
On my uberturbines it would show 40psi when the tire pressure was 42.
On my brand new set of wheels (with new Tesla TPMS sensors) it reads 40 when the tire pressure is 43.

In both cases I check the tire pressures cold before I start driving. Once I start driving the car is always lower to the true pressure.
Anyone else have experience with the bluetooth TPMS reading a bit low? Any way to "calibrate" them?

 

[jkeyser14]

I filled all 4 of my tires to the exact same pressure yesterday using the exact same digital presssure gauge (cold weather had cause a few psi drop). One of the 4 tires is reading 3 psi lower than the other 3 after starting to drive.

 

[ysaliens]

I should add that I'm at 5100 ft elevation though I didn't think TPMS readings should be affected by that...