Ok, thanks for the responses, i think now I am a little confused though as best way to go, they are all 32 at the moment but then with a sticker on the door suggesting upto 42 on one of your cars makes me think It would be higher.
I am more interested than normal as a good freind of mine is a policeman and he has just done a advanced driving course and was explaining to me how 10% change in tyre pressure off what is recommended can have a serious affect on the handling of a car so would like to try and get it right!!
Cheers, Andrew