:welcome: to X5 World! Ive had three Bimmers and still have no "technical" clue about them. I do know that I have never experienced any major problems with any of them. SOme people have expressed some nagging problems with '01, '02 models (window regulators, etc) But Im sure they could elaborate on them better than I can. There are some tyre places around, of course it will depend on your size. You can also check
www.tirerack.com for good prices IMO, and the shipping ain't that bad either. BTW, Where are you located? Im about 20 minutes north of Cambridge...Again, :welcome: