Increased shoulder wear

[Pinewood]

Washing the car yesterday, and doing my usual weekly vehicle check.  I notice the front tyres are starting to wear a little more on the outside shoulders, compared to the centre area.  They are set to 32psi which is the recommended pressure on the B pillar. 
The car has done 8000 miles and drives straight, no pulling.

Should i increase the psi?
I had it set to 34psi front/36psi rear initially, but the main dealer lowered them to 32f/33r when it went in for a window seal replacement.

What psi do you set on 19" staggered rft's?
Do you notice increased shoulder wear?

[X5Sport]

32psi all round worked fine for me.  There's a label on the B-pillar with that data including wheel sizes and load.

It's more likely to be a tracking error, and this wear pattern is very common on the E53.

[notyalc]

What make of tyre?
They don't all wear like a Michelin!

[Pinewood]

Pirelli p zero runflats at the moment