I just purchased a 04 530 and I have some concerns about it first of all car has 49k and is in like new condition but the problems I have so far is that I keep getting message from the I-drive system that I have a flat tire and I have checked all the tires for correct pressure and everything is right on the money and my question is how do you turn off the message.Also after the car sits for more than a couple oh hours the first time you start it the cars turns over several times then when it starts acts like it is missing until I touch the gas and then it clears up and runs great and after that you can cut it off and restart as many times as you want and then fires right up and runs great without any hesitation.Also as far as resetting the computer to get rid of messages Im hoping its not a dealer thing and any info you can pass along as to where to buy the equipment to do it myself cause I work on my own cars if at all possible would be great.Very sorry for the long post but im new to these cars and any information or sites you can direct me to would be wonderful.I love the car but all the sensors and I-drive i can do without also if it matters the cars has M5 wheels on it so not the original size tires and wheels didn't know if that made a diff on the monitoring system.Going to get some pics posted as soon as I have time to debadge it and get it cleaned up properly.Again thanks for any knowledge that you send my way.