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I got fed up and just decided to live with the warning being illuminated with 29/32 cold and 33/36 fully warmed up on a hot canyon carving day.
First time I did this the warning ⚠️ and Low Pressure warnings just vanished. System seemed to adjust/learn that the pressures are not underinflation or a leak.
The recommended pressures in the GTS owner manual and on the door jam placard are ridiculous at 37/44.
The 997.2 GT3 is like 29/32 cold, right?
I have the same wheel/tire sizes as the GT2/3 RS so not sure why we get the warning in a GTS. The ECU must be programmed differently?
Anyways, try driving a while with the warning on, it might just vanish like mine did.
Last edited by Liste-Renn; 05-27-2024 at 10:27 PM.
I got fed up and just decided to live with the warning being illuminated with 29/32 cold and 33/36 fully warmed up on a hot canyon carving day.
First time I did this the warning ⚠️ and Low Pressure warnings just vanished. System seemed to adjust/learn that the pressures are not underinflation or a leak.
The recommended pressures in the GTS owner manual and on the door jam placard are ridiculous at 37/44.
The 997.2 GT3 is like 29/32 cold, right?
I have the same wheel/tire sizes as the GT2/3 RS so not sure why we get the warning in a GTS. The ECU must be programmed differently?
Anyways, try driving a while with the warning on, it might just vanish like mine did.
yep. Makes no sense the numbers are so high! Way too high. Yeah may just have to live with it or see if I can program it to stay off 🤣
You can program them out so they do not function or throw warnings. I had it done several years ago. I routinely check my pressure manually with a gauge that is far more accurate. No need for tpms.
Try driving with the Caution symbol illuminated and PTMS message displayed- I even had a Flat Tire warning pop up.
Took about 10 minutes and the light/message disappeared.
Tire technology has certainly improved since 2011-2012 when those 37/44 psi door placards and owner manuals were printed.
I loved the Michelin Pilot Sport, but the PS4S is a far more capable tire, IMO.
"Mushy" does not describe the set I am enjoying.
Especially in the rain. YMMV, as do some here on RL.
Would love to hear your impression of the GTS vs GT3. You are lucky to own them both.
I know the GTS is PDK, but the chassis, steering, brakes and torque/power differences would be a good read.
....this TPMS issue is spreading---->Walked by/popped my head into my Porsche Indy shop last week and some GT Owners bitching about TPMS over a card game..
I run 32/37 in my wife's car and 35/40 in mine. That's a lot of weight over those rear tires and they need decent pressure to support it. The front to rear differential is important too for proper handling and should be 5 or 6 psi of difference.
I run 32/37 in my wife's car and 35/40 in mine. That's a lot of weight over those rear tires and they need decent pressure to support it. The front to rear differential is important too for proper handling and should be 5 or 6 psi of difference.
@Petza914 doesn’t even need that much. Also preference. My 997.1GT3 says 29/33. Weight on rear isn’t really any different. And don’t neeed that much difference. On track we all run close and equal pressures around. And go on a fun canyon drive with 40psi rear and it’s getting way too high fast when it heats up.
Peter, I'll assume neither vehicle throws an ! or text warning in the TPMS menu page at those values? TIA for any insight.
I like the handling at less than those cold pressures, since by the time I am carving up canyons, my warm pressures are in those ranges anyways.
To the OP: I totally agree with your analysis. If I run the minimum cold pressures to avoid the getting the warnings, the warm/hot pressures are well in excess of 40 in the rear. If one starts out cold at the placard 37/44, the rears can get up to 50 psi on a 90+ degree day with multi miles of linked switchbacks.
I bought a portable compressor to use for those sessions. Plan was to bleed down the pressures to mid 30's, high 30's warm, then replenish when they cooled off post session and inflate to minimum required to cancel the warnings. Good idea, I thought, but the pump was 15A and the highest rated outlet in a 7.2 is only 10A. Blew a fuse immediately when hooked up.
I am quite frankly amazed that my own problem solved itself on my last drive. In the past I was reluctant to leave a gas station with air service with the warnings on. Ignoring those for 10 minutes seemed to fix the problem- which never returned over 3 days and 3-400 miles of canyons.
Last edited by Liste-Renn; 05-28-2024 at 04:51 PM.
Would love to hear your impression of the GTS vs GT3. You are lucky to own them both.
I know the GTS is PDK, but the chassis, steering, brakes and torque/power differences would be a good read.
very lucky.
steering is great in both. Similar, biggest difference probably comes from the tires. The power FEELS like way more than 7hp. More like 50+ or more. I want to roll race them side by side just to see if it’s all feeling. I do have the 3.8RS ring and pinion in my gt3 so it feels much more torquey and the top end feels like it pulls much harder. Could be the sound and feel of the motor with less sound deadening. Gt3 much louder inside. Gts feels like a chill cruiser when you want it to be. Much more tame. All perspective. My buddy who doesn’t own any sports car was like man I forgot what a sports car feels like being in the gts , and was like I can’t imagine you daily drove that gt3 for the last 18 months. But with all my blabbering …they’re very different but same. Like hitting the sport mode button x100. Granted I think if I could have the gt3 motor in the gts it would be amazing 🤣 and perfect spot too.
OP, your GT3/GTS experience/description matches that of @Busta Rib.
Jim had a .2 GT3 and described it as not really coming into its own unless pushed hard and wrung out.
The Mezger's higher redline is a symphony, but I believe the 997 GTS torque curve is very different from the .1 GT3.
The X51 kit peak torque arrives earlier than the Carrera S 3.8 and the rev limiter kicks in at 7500 rpm despite what the tachometer marking indicates.
I really appreciate the mid-range torque of the GTS but it feels to me like the X51 engine pulls hard from 6500-7300 (peak hp) where my base Carrera ran a bit out of breath above 6500. The GT3 is a different animal despite sharing the same chassis layout. Your R&P setup probably drops the final drive ratio and allows you to access upper ranges in 2nd gear more often- 3rd is "arrest me" territory speed above 6000! Curious what that extra 900 rpm above the GTS' 7500 redline feels like, we all know it sounds awesome.
Last edited by Liste-Renn; 05-28-2024 at 07:41 PM.
On the non-GT3 cars, the door jamb sticker is misleading: It only shows the Max Load pressures. You need to read page 289 of the owners manual (997.2 version attached), to see the correct "partial load" pressures (F34, R40) that apply to all other conditions.
To zero-out the warnings and dash lights, manually set your tires pressure to the partial load levels (or slightly lower even) and then tell the TPMS system to "relearn." The TPMS system will still be active, but it will only warn you if your tire pressures fall 3-4psi below these new, lower (more correct) settings.
05-27-2024, 11:50 AM
TPMS…is there a way to lower settings? It’s so high!
