Don' trust the tyre places, out of the thousands of types of cars they won't know the correct pressure. Open your drivers door and there is a sticker on the inner arch that tells you the correct tyre pressure, as phil said 35psi
personally I never do these kind of things. Companies make fortunes in selling the data. None of this is given back to the people who originally supplied it.
a enjoyable day and congrats to Steve and the crew for organising the event. Me and martin even won a trophy and Martin won the main prize from the endless raffle. Have you used the jet wash yet then Martin