Ok, I've tried various pressures in my 159 TI (saloon) over the past few weeks and months and I've eventually arrived back at the figure that they were at when I first got the car from the Alfa main dealer - 36 front and 35 rear.
I tried book pressure and those a little higher and lower than book pressures but they all seem to make the car less sure footed and more likely to skip and tramline and torque-steer. The book pressures are too high it seems for mine, yet you all seem to be running book or in some cases higher. What's different ?
Not sure if I mentioned it before but my tyres are Continental Contisport Contact 3's in 235/40/R19 with load rating of 92W.
2010 159 TI Saloon - black
(My company car now gone - too late to buy it!)