29/31 - you want the lower pressures unless you're attempting a top-speed run. You get better traction and more comfort.

 

you guys really running north of 165? i think i got up to 77 today...

 

29/31 is great. Much more traction!

 

 

 

Not sure why dealers like to pump it up that high. When I picked up the car it was at 35 / 45. The car feels much better with lowered down pressure.. Currently running at 31 / 35. didn't go down to 29 / 31.

 

Im with Hurricane and currently running 30-33. Goes up to 35-38 on spirited drives even when 50F outside. Above that it gets squirrely.. 32-35 would be ok for normal driving, but for some reason less pressure is actually more comfortable in this car. Never experienced that before, at least to this extent.

 

 

Is there a reason the pressures are so much closer on the .2 between back to front? On my .1 with 20's, the manual states that the separation is +8 favoring the rear. The shop I had it at as usual inflated it to ridiculous mid 40's, but I brought it down. I live in a warm climate so when spirited driving on warm roads, it reaches mid 40's at the rear. When starting it up for the day at cold, it's like 39 rear which is about where the manual states it should be for partial load.

 

I have never run mine at 8lb difference front to rear on any of my 911's. I have always been 3-4. On my previous 4S I was at 31 x 35 and on the TTS I am at either 32 x 35 or same as the 4S or 1 lb less.

 

Do you go by what the manual states? Just curious as to why it shows such a vast difference on mine (2012.5).

http://www.porscheownersmanuals.com/...6/262/Pressure

 

 

That is weird. I wonder if the .2's wider rear wheels have to do with it, which doesn't seem likely. But my cars wheels are as wide as the .2's 20's, which would then make it more confusing as to what's right for me, lol.

I will say I liked how it felt when driving enthusiastically recently, where it starts at around 32/39 and gets up to 36/44 or so when hot. I don't mind it to feel a bit "hoppy" as these cars are so planted that getting the rear to feel a bit "loose" while keeping it at reasonable speeds and G's isn't so bad. To be honest, I don't notice MASSIVE differences with the car when the PSI's are different, but there is that "sweet spot." Surprisingly where I am now, albeit a bit high, seems ok. But if I daily drove it, maybe I'd want it softer.

 

Guys, just follow what the tpms says. When cold, set it to comfort mode and it will show how much more (+) you have to deflate.

I now make myself a mental note to check the tire pressure every time I pick up the car after a dealer service. Every time they change it to full load.

 

I can only guess they list the ranges based on very high speed. I find the car much more comfortable to drive at the lower pressures and it handles better. If I was driving at very excessive speeds I might consider the pressures but I am not. These are pressures I have gotten comfortable with over several Pcars.