I had mine replaced when i bought the car from the main dealer (apparently the original alloys were buckled?) and the main dealer set front and back to 33.On my hatchback the handbook say 39 psi on the front and 32 on the back. 39 psi sounds alot too me!
i did say i stand corrected since looking in my hand book,it actually states 29psi front and rear. as long as your presures are within these regions you should be okay,but i would defianatly not use 39psithe correct pressure is 32 fornt 34 rear or 34 front and 36 rear at speed or load