Hi, I am just about to get my M3 (cant wait!!), and I was wondering what I should do first as far as replacing parts goes. The car only has 53k miles on it, but the previous owner did all the maintenance himself and I am concerned that there might be several parts that are about to go out that need to be replaced. Is there anything in particular I should look out for? I figured that the water pump probably should be replaced, but what about like the timing chain? Thanks.