Re: 147 tyre size.
Had some e-mail contact with van Kooten this morning.
It seems they import these wheels through "Alfa channels" as they call it. The wheel design is normally for a 166 but this version is specially made for 147/156. Probably still a replica of some sort, don't really care.
They advised me not to go for 225-45-17. 215-45-17 is the maximum and this should work fine according to them. Maybe because of a specific ET value?
Next wednesday we will test fit them. Just for a picture and a quick run around though, after that the 16" go back with wintertyres. Just for a short trip to the "Ardennen" in two weeks time.
After that, the 17" go on permanent for the coming (??) summer.
Thanks again for all your input.