err, maybe immobiliser problem. from how Chris did my car he completely rip out factory immobiliser and put in the ADR one.
he said something about the factory immobiliser is going to give you grief soon or later, probably if they just piggy back the ADR one on top of the factory one that's probably the main source of your problem....
but just let Chris give his insights... or you can take it to him when he is down here sometime August...
wheels - wise, never done it before but I think if you take off the boot floor and leave your spare at home, you can get either 1 or 2 in the boot,
2 in the back seat, and 1 in the front passenger seat, but with all those plastic dashboard parts I hate to see your interior get scratched.... or you make 2 trips, since you're so close in sunshine....?