What do you guys do when the TPMS goes wonky because of fluctuating tire pressures during a track day? The large warning that fills the entire gauge face is quite distracting when it frequently pops up. Also it hides the Chrono screen and electronic gauges that I like glance at during the appropriate time on the straights.

Any way to at least stop the big warning screen in the gauge from activating? Pretty distracting and annoying. I can live with the tiny flat tire symbol as I did with my Cayman.

 

Good question. I have had the same issue and did not find a complete workaround.
Nevertheless, most of the TPMS alerts I get are before getting on the track when tires are 'under inflated'. When the tires heat up, I am still running lower than the OEM spec (~36 PSI if I remember well, never more than 40) but do not get a lot of alerts.
One way to minimize (not to avoid completely) is to choose the 'COMFORT' setting in the TPMS menu that allows to run at a lower pressure than in 'STANDARD' mode.

 

 

Noticed this, too. Activate the comfort setting, as noted above, and also flick the lower right stalk for the display either forward or backward when the big warning comes up on the screen--it will minimize the warning to the background and call back up your electronic gauge display, or nav instructions ("turn right for off-camber corner in 100 yards..."), or sat radio display (Lady Gaga, Iggy Azalea, etc.).
I've been trying for the full Christmas-tree of warning messages. So far I've managed to have simultaneously: TPMS warning, airbag warning (running race seats), seatbelt warning (running full harnesses), and low fuel warning (went out for a session with 1/3 of a tank).

 

I also got limp mode ... when I got into fuel starvation at VIR even though I started with almost half of a tank. Big moment of shame. For the seatbelt warning (and annoying sound), I always use spare seat buckles.

 

Good tips everyone. Even you, drcollie! Yes, I have been flicking the stalk to get rid of it but it's just another distraction especially when I want to flick the stalk to count another lap on the Sport Display mode of the Chrono.

I use 19" BBS wheels on the track and there is only a "winter tire" setting in the TPMS menu for that size wheel. That's what I used. I don't see a comfort mode choice in the 19", only the 20". Do you guys run 19" on the track? Do you just leave the TPMS set to 20" tires?

 

Here's what I know, and I can be mistaking so do not hesitate to correct me.

* On non-US 991 you have the choice between 20" winter, 20" summer, 19" winter and 19" summer. Not exactly sure why 20" winter does not appear in the US. There are OEM approved summer and winter tires both in 19" and 20"
* 19-inch sizes are the same for Summer and Winter Tires: 235/40-19 and 285/35-19.
* The total diameter of the 19 and 20-inch configurations is almost the same: 26.4" vs 26.8" at the front and 26.9" vs 27" at the rear.
* The two track tires I have run (R888 and AD08R) were 235/35-19 and 295/30-19 that respectively have a diameter of 25.5" and 26"

So selecting a 19" (winter wheel in a US car) instead of 20" in order to try to account for a slight reduction in diameter (0.4" at the front, 0.1" at the rear) is meaningless when compared to the reduction in diameter of our track tires (1.3" at the front, 1" at the rear). Based on this, you might as well keep your 20" summer setting and select 'partial load' and 'comfort pressure' to get fewer warnings from your TPMS.
In fact, I am not even sure that the wheel selection has any other use than setting the threshold for a TPMS alert (winter, summer, 19 and 20" have different recommended tire pressure) and does even take into account any difference in diameter. After all the difference in diameter between the 19 and 20" wheels is smaller than the reduction in diameter between new and old tires. Therefore, I doubt that this TPMS setting has an impact on on anything else than the reference tire pressure (could be on measured speed based on slight difference in diameter, PDK shifting points, nannies parameters... if the difference in diameter was more important).

 

^^Great analysis. This makes a lot of sense. I will change the TPMS settings and try to avert my eye to the yellow dash flashes.

 

I guess Im not driving hard enough, I do not get any error messages from my sensor during track events. I start at about 32-34 cold and work it from there. I leave the settings for summer 20s.

 

Interesting, I have done many track days and seen all kinds of temps but never got that error either. I wonder if there is something not quite right with the sensors and you should have them checked out. Perhaps something is causing the communication to be interrupted