hmmm, plenty of food for thought, the t1r's are ok, but nothing special, used them a few times, but i doubt they'd be fantastic with the zetec turbo engine. in the xr2.
r1r's are nice, bit too soft, but i'm after nothing bigger diameter-wise than the 195/45's already fitted due to clearance issues, smaller is acceptable though.
888's are out of the question due to profile and cost, plus it's a road car after all.
p zero nero are an option and come in a good range of profiles.
my wheels are Rota competition on 7j, the 195/45's look a little stretched, so assume wider would be fine, even up to 215, but not seen a pic of that profile on a rim to see if they look daft.