bosco42

Wondering what the thought is regarding ideal tire pressures for OEM P Zero's on a new 991.2 Targa 4 GTS
Sticker on the door states Cold Temp should be Front 33 Rear 45.

LexVan

Comfort levels.

Fronts 32/34

Rears 35/36

bosco42

Wow...big difference on the rears.
While it is sitting in the garage for the winter should I over inflate them to prevent dead spots and, if so, to what pressure ?

LexVan

Yes. 45 is way too high. That's for 3 passengers and luggage on the Autobahn.

Yes. I go about 58 for winter hibernation.

Gordon Shumway

For my '18 GTS I eventually settled on Standard Partial Load (31F/39R), which is also the pressures for the Full Load Comfort settings.

Bob Z.

I suggest you play around with them and see how they feel at different settings; however, no more than 40 anywhere (other than storage). I am running 33/38 cold on my Targa GTS.

bosco42

Any idea what those figures increase to after cruising (not racing) for about 30-60 minutes on a 36 degree winter day and an 80 degree summer day ?

Porsche_nuts

On a warm day, tire temps increase about 4-6 lbs from my experience

LexVan

On a 36 degree day, I'd expect the tires to pick up 1 or 2 psi.

On an 80 degree day, I'd expect the fronts to pick up about 2 psi and the rears to pick up about 3 psi.

LexVan

This is my experience on a HOT day. Not a warm day. To me, an 80 degree day is warm.

bosco42

Yesterday was a sunny 36 degree day with clear roads so I went for a drive to familiarize myself with my new Targa.
When I returned home I noticed the TPMS registered 35/45 which means that it was most likely around 33/43 when I started ??
The point is I did not find the ride too firm at all ( actually quite comfortable ) so I suspect if I adjust it to the cold pressures being suggested it will feel down right soft and cushy.
Thoughts ?

LexVan

Be careful driving in 36 degree weather with the factory OE summer tires.

Porsche_nuts

LOL, I consider anything over 75 degrees hot.

LexVan

Menopause will do that.

john45in

This is my 4th season with winter tires on my C4. 30F and 33R has worked for me.