got cs v8 runing on 295/45/19 oem wheels and notice that the pressure for the air in front is 38psi and rear is 49 psi funny thing is that odd since the max psi indicate on the wheels is 50psi, wouldn't that be running that rear tires @a dangerous level since our tires to heat up 4-5psi ????anyone else notice that and what are you guys running your tire pressure at =best gas mileage i am trying out 40 f and 45 rear. live at the bench in sanfran,ca gets cold in the moroning will see after a few days.

 

The listed pressures are cold and yes, they will rise when the vehicle is operated.

 

I will re read my manual but I thought the pressure was 38/43. As far as the 4-5psi heat up, not a problem as the pressure given are cold pressures and take in to consideration heat/cold etc. Of course your tires are wider than mine as mine are 275.

 

38/43 is correct for partially loaded CS/CT and 38/50 fully loaded. The tires you listed are not in my manual or depicted on the front door. Mine is an '03 and I have no data on that type of tire.

 

Blade-MD, you are correct the tire pressures I gave is for a partially loaded Cayenne. So far I've never had the car loaded to the max (5 people plus full luggage). In fact I've never had 5 people in it at once I don't know the sizes for 03 but for 04/05 you can find the Porsche recommended sizes in Christophorus or in the pamphlet from Porsche "Tires Porsche Approved Original Equipment" Fall/Winter 200-2005. For the Cayenne models the sizes are 235/65/17, 235/60/18, 255/55/18, 255/50/19 (winter only) 275/45/19 and 275/40/20.

 

Sorry guys running 275-45 19 on pirelli P zero oem tires.