I really don't like the 18"-20" rim with 35 aspect ratio tire look on old cars. Wasn't sure I was going to like the 17's. I did a lot of research/thinking prior to taking the 17" wheel plunge but the brakes kind of dictated 17's. Notice the tires are 45 aspect ratio so the sidewalls are a little taller to get away from the "rubber band" look. Like Firebird Mike said, there are a lot of trade-offs. Think through what future upgrades you may want and talk to people about them then decide as a combo. Great advice!
I made a wood contraption and measured wheel fitment myself. It's not all that difficult to do. There is a lot of information on the web for tire and wheel sizes.
Agree, not a fan of the rubber band tires either. I don't have any good photos, but I'm running the pretty common 245/45R17 and 275/40R17 combo which both have a 4.34" sidewall (splits the difference between your 4" and 4.5" front/rear sidewalls). I'm going to try to stuff 255/40R18s on the front, and 275/40R18 rear. That will make the overall height on the rear taller, but I think that will follow the rear wheel arch better. I wouldn't want a shorter sidewall than that on the rear anyway, because it will lose bite off the line.
If you get a chance, love to see your homemade wheel fitment tool.
