...I suppose a M3W would require more attention after being driven in the rain. Will I have to disassemble certain parts, blow dry them with compressed air? What about the seats?
Not really - I will chamois the rain off the body if putting it into the garage. If a downpour has left water in the car then I would mop it up and dry the seats with towels. But I tend to drive with the passenger tonneau on. Thats it!