abokor

What are other 991 GTS owners running on their 20" 245/305 PZero's for DD use?

I have backed mine off of the recommendation on the door sill to 32psi front and 41psi rear.

woodrow

my car came 38 f 42 r chuck911 set me straight now it's 32f 38r in the heat of the day 20% increase is expected 90 deg the ride is a little better for a DD CHEERS

Larry Cable

I think for as long as I have had a Porsche I have always driven them 32/38 cold.

n2cars

Would the tire pressure of ALL 20" 245/305 Zeros be the same regardless of the 991 model? Does being a Cab or Targa or Coupe make a difference? My door sill information says 36F and 45R

john45in

31F/34R cold on a 2013 C4.

LexVan

But not all 991s have a 305 rear tire. And certain wheels like the Sport Techno get 'em. The wide body gets the 305 too.

fl0950

Read your manual. In my 50th Anniversary, with 305's in the rear, there are "comfort" tire pressures F and R. Makes a huge difference on ride quality.

abokor

If I prefer a firmer ride, would the recommendation be to de-select "Comfort pressure" and fill the tires closer to the door sill recommendation? I ran them today at 32/38 cold and it was fine, but I could possibly stand an even a firmer ride. I can obviously play around with it, but was curious what others have experimented with. I suppose I can leave the pressure at 32/38 and then select the PDCC button (although my car does not have PDCC).

GSIRM3

Those are full load condition pressures. Read your manual for partial load pressures, and "comfort" pressures.

porsche42

I have them at 34f/43r what is what the manual says for comfort. Though seems high for the rear ones. Have not tried any other pressures though. Want a comfort ride and make the tires last at least till 15k miles.

GSIRM3

You might want to check your manual again. I don't think the comfort settings are anywhere near that high.

Larry Cable

+1