Guys, Anyone have any real world experience on running costs on Audi RS4's. Done a lot of looking about, these can be had with low miles from 25k-27k ish which is do-able. I know it will eat petrol, tyres and wont be cheap to service, tax etc etc. I know warranty is essential etc etc but can any offer up any real world costs in terms of tyres, servicing, faults etc etc. Im under no illusions these are cheap cars to run, ive got some ideas but would welcome any thoughts!