Was it a nimbus 197 with black standard wheels? If it was it could've been photos of my car on it's track wheels and tyres. I have 225/40's on them, Goodyear eagle f1's. Can't repost the pics at the mo cos I'm doing this on my iPhone but the look good and fit well. Seem to fill the arches a little nicer than the standard size.
If you wanna see the pics again let me know and I'll repost them.