the thing on the door of my k11 says 2.3 (bar) or 33 psi front and on back 2.0 (bar) or 29 psi when 1 to 3 people in car.
with 5 people it says 2.5 (bar) or 36 psi front and on back 2.4(bar) or 35 psi with 5 people plus weight. i have them at 36 at the front and 35 at the back as i normally have people in the car. i find this is best and gives me good fuel economy and the tyres wear good :grinning: