Is there a way to recalibrate the TPMS or somesuch?

My tire pressures are 35/37, slightly above the Porsche's suggestions, but the TPMS constantly reads around 29/31 or 30/31. I've been driving around with a "low pressure" warning on the dash for about two months now. I've reset the system but it always comes up with the same pressures and gives me the warnings again.

Is there a fix?

 

nuthin huh?

 

it is possible your gauge is off. check the pressures when the tires are cold and use the on board measurements to calibrate/set them. that is usually the culprit, either warm tires when adjusting or a pressure gauge that is off by a few psi. if not i would say take it into the dealer and see what's up, there could be an issue.

Good Luck!