It's a high strung, hand made toy. It's evolution is a work in progress, the issues from the past have been addressed as they crop up, but who knows what the future holds? If you're 1400km away from a dealer, you'd need someone local to handle repairs.
The larger issue (for me, anyways) is your basic temperament with things that inevitably will go wrong, and then the inevitable wait for parts and repairs. I think most here would agree you have to be of the mind set that stuff happens and it will be..sooner or later...inconvenient...and that equally, it will eventually get sorted out. If that doesn't sit well for you, if you're one of those people who expect absolute reliability and easy service with an absolute minimum of inconvenience, if you expect perfection.. then regardless of how much desire you have or how much fun you;ll experience when it's running right, you should pass.
Lastly, I can't imagine touring the Continent for an extended period of time only in a M3W, for me it's not that kind of experience, I think it's best enjoyed in small, concentrated doses. Otherwise, those things that make it most charming become an annoyance, it's really not like a great car that you cannot get enough of.
