Hey, I am getting a 2007 bmw 525i in May and just need to ask a few questions? First, is the sound system upgrade worth the money? I already have a 10 inch subwoofer that I was going to put in the trunck. Also, I was going to upgrade rims, should I stick with the runflats and go with the different factory style rims or get some continentals with after market rims. If I go with the factory styles, I can probably get the tire and rim warranty with it. Next, is the valentine radar really worth the 500? I am also getting a body kit. i have so far seen the m-tech, hamman, bavarian and the "m5 look alike" body kits. Which one is the better one and can the I have it istalled by the dealer, or could I even purchase them from the dealer? I was also going to get window tint. The legal limit here is 25% should I get that? My main concern is the rims because that is what makes your ar different from the others. Interior, I was going to get an indash t.v. Has anybody done this and how difficult was it and how much did it cost? Also, how would I install thje subwoofer? Is there a rca connection in the back of the radio headunit or will i have to hook up the the back speakers? I also wanted to put a 10 inch flip down for the rear passangers. Money is not an issue, but I was thinking I would be able to get all this done in 5 grand? Please post with responses if anybody has tried any thing listed aboe. I am not getting the navi or the premium/sports package. Thank you very much.