I've got 5mm spacers all round, to allow my 16' old style freebie alloys to fit over my 03 Td4 calipers and not had any issues to date.
Spent ages looking for some 17' ATs and they were like rocking horse 5h1t. Bought some old 16's, set of spacers and a new set of BFGs AT. Plenty of thread left...