Tire Pressure Monitor (TPM) error?

[Franklin Joseph]

Got a TPM warning this morning...said right front was low.
I checked the pressure and it was 30 psi. Reset TPM and all is good.
I'll check the pressure this evening just to be sure. Tire looks good, not deflated or anything...but i'm not familiar with runflats.

Is it common for the TPM to give error warnings? At what psi does the TPM warning normally trigger?

Thanks
Franklin

[AtlX]

Had the same issue this morning. Often a function of changing temperatures. Cold mornings drop the tire pressure a bit and the tpm sensor can be a bit sensitive. It used to happen quite a bit in my M3. Solved the issue by filling the tires with nitrogen. More stable gas. Good to recheck the tire pressure and look for nails/damage in any case when the tpm goes off.

[MRV99]

Originally Posted by AtlX

Had the same issue this morning. Often a function of changing temperatures. Cold mornings drop the tire pressure a bit and the tpm sensor can be a bit sensitive. It used to happen quite a bit in my M3. Solved the issue by filling the tires with nitrogen. More stable gas. Good to recheck the tire pressure and look for nails/damage in any case when the tpm goes off.

Why would you pay the xtra money for the nitrogen when the normal air put in the tire contains almost 80% nitrogen anyway. I can see if you needed exact pressures but on a street car you would never need that much accuracy. Just check you tire preasures once a month and add if needed.

[AtlX]

Just illustrating that cold mornings can sometimes set off the tpm. On the M3 I had an overly sensitive tpm sensor and it was a last resort. Actually worked.

[ard]

Originally Posted by AtlX

Had the same issue this morning. Often a function of changing temperatures. Cold mornings drop the tire pressure a bit and the tpm sensor can be a bit sensitive. It used to happen quite a bit in my M3. Solved the issue by filling the tires with nitrogen. More stable gas. Good to recheck the tire pressure and look for nails/damage in any case when the tpm goes off.

Silly notion. Nitrogen is NOT "more stable" than air. Air is 78% nitrogen. AND air follows the same 'gas law' as nitrogen (PV=nRT)

Use DRY air and it will be the same as nitrogen, unless you want 10 year life on your tires.

Silly scam, believed by many....

Remember, the 99.99% nitrogen used in aircraft and race cars is NOT what the 'nitrogen concentrators' at tire stores sell, which is 94% nitrogen!