powahousealex

Hello,
first off , i read on other forums on tire /wheel combination that would give these faults, not sure if that issue pertains to the 997.2S .as all i read was pertaining to the 997.1

Today , I installed a new set of wheels without TPMS , 19x8.5 +48 19x11.5+ 48 rear . They fit completely but not sure if the geometry would make this fault . I don't know the sensitivity for these cars given wheels specs.tire size is stock 235 front 295 rear. i was running stock carrera s II wheels without issues(with TPMS) .These are aggressive wheels for this model but fit flush to my expectations.
question would be ,

is there a way to bypass or turn off the PSM off completely so i can use sport mode,sport mode will not work when PSM is malfunctioning .
car is equipped with PASM .all else is stock .

What could be the issue ?

Wayne Smith

New tires have mold release. A friend just had this problem on his GTS. 500 miles and gone.

There should be a PSM defeat button on the bottom row far right. Use caution if you disable this.

powahousealex

I have tried this , disabled the PSM ,after a few bumps and hard turns the PSM failure come's into the picture

Petza914

How's your battery? PSM failure is the first message that cones up when voltage is low or you disconnect the battery.

The wheel sizes and offsets you mention shouldn't cause that problem. You provided your tire section widths, but what about the aspect ratios, are those stock too 235/30 in the front and 295/30 in the rear? If you've changed either the front or the rear and the rolling circumference of tge tires on one "axle" has changed, it could do that.

powahousealex

Battery is new and have a trickle charger attached when not driven . Yes you are correct,i mentioned that i am running stock sizes which are the sizes above 235/35 and 295/30

this is really odd to me ,ive done extensive research and seems mine is only doing this ,aside from what i read on PLANET-9 .

anyone else ?

anyone with durametric tool to L.A would help,gladly will pay

Petza914

Any chance you knocked loose or unplugged one of the wheel speed sensors when installing the new wheels?

powahousealex

Not at all , old wheels came off , new wheels came on(without TPMS) i was driving down PCH(los angeles coast) if i cruise no issue , its when i take it around turns.