that surprize's me, i would of expected atleast 32psi but thanks.you should be looking at around 28-30 psi
you need the wheel nuts for them alloys as im pretty sure the p38 wheel nuts are different. also im led to beleive that you need 4 spigot rings as well as the centre bore on the wheels are different size than p38.
Have you tried them on the car yet, I can only imagine it will be an uncomfortable ride whatever you do.