On a related note (not quite a hijack); 18 inch BBS CH's seem to come in two widths, 8 and 8.5 inches. Anyone any views on which is more suitable for a Mk7 GTI? Presumably the 8.5 inch wheels simply sit a little further out than standard Austins but will that cause any problems?
Depends on the offset and width of tyre you plan on fitting.
I thought the Austins were 7.5 x 18 so either are a change from standard.
Looking at the BBS website the 8" wide rim is ET50. This adds 5.3mm (outside) and 7.3mm (inside) to the wheel.
The 8.5" rim looks to have be ET35. This pushes the outside edge of the rim 26.7mm further out - way too far in my opinion.
If they are anthing like my BBS SRs, then BBS do not recommend using spacers with them either.