I just took delivery of a brand new, still in the box set of 15" BBS RZ alloys for my mystic blue GTi. Snapped them up off ebay for £265

, they are in mint condition and have never been fitted to a car by the look of them. They are not split rims but the dished part of the rims are polished.
As they did not come with tyres I thought I'd see what size any of you might recommend. My existing rims are standard later Mk3 Gti ones (not solitude's or speedines), 15" x 6" or 6.5" I think

. These are fitted with 205/50/15 tyres. The BBS rims are 15" x 7".
I know 195/50/15's will fit 15" x 7" rims, but as my standard rims are narrower and have a wider tyre I'm not sure what would be the best size to go for. I don't really want to go for the stretched look with them.
The car itself is on standard non lowered suspension (though this may change in the future

), with the plastic wheel arches still fitted.
I'm in no great hurry to get these on the car, as it is going in the bodyshop in about 2 weeks time to a have some minor paint and dent repairs carried out. But any advice on tyre size would be much appreciated.