Everyone can see the post but not everyone has time to reply .. like me!
Yes you will run into problems with your planned tyre sizes.
Pretty sure I mentioned in the guide about running a 8.5 et 40-something and that 225/40 would rub... you want 205/40s (only Yokohama s drives or Michelin pilot supersports are good tyres in this size) or 215/35 which gives you more tyre choice but then the problem is your car has to be stupidly low for it to look right.
And on the rear you need 225/40.
the 3sdms are very common and a lot of people run them and nearly always run 205/40 and 225/40 retrospectively.
Not withstanding that different tyres run different widths, I have 215/35 sessantas on my mercedes wheels and yet there's still a rim protector, a friend has the same tyre size but Falkens instead of vredesteins and you can see between his tyre and lip.
To be honest on eibach springs (30mm drop over standard SE height which would be about 10-15mm on a GTI) having such wide wheels would look odd! Especially if they are prokits which are listed as 30mm drop? or you on sportlines.. :)