Browsing through Flunder’s tremendous build thread on the Early 911S Registry forums, I was struck by this interesting phenomenon of the competition 911s of the early 1970s: Fuchs 7R fronts and Minilite 9×15 rear. The combination creates a marvelous stance and an interesting big & little wheel combination. Mismatched wheels may look a bit jarring to contemporary eyes, but there’s no question that it’s a racey look. This is racing, after all, and we’re after results, not beauty. If it just so happens to be beautiful—as I think it does in this case—then all the better. Some commenters have suggested that the wider Fuchs weren’t yet available, or weren’t as strong as the Minilites.
Flunder’s entire thread is worth a look. I was discussing with a friend recently the concept of rare parts hoarders. I’m sure you’ve run into a few, they’ll have benches full of rare race parts, mechanical fuel injection systems or period turbos wasting away in the corners of their basement. Usually I get grumpy about these folks, that they’re speculators holding onto parts for their increasing value with no intention of ever putting them into their cars.
Flunder has proven that there are still “good” parts collectors. After a 3 year search for a seemingly endless list of rare factory race parts (factory aluminum door skins, plexiglass, conrods, the works), he put together a stunning tribute to the Group 4 racers of the early 70s. “Tribute” is probably the wrong word, this thing is probably more authentic than most surviving Group 4 cars.
Chiquita 
Irwin Kremer 1970 ST
Thankfully, he also went with Fuchs in front and Minilites in the rear. It’s probably going to cause some folks to scratch their heads on the street, but it’s these small acts of courage that make me enjoy the vintage sportscar world so much.