Wheels and tires, tires and wheels?, Need brainpower of the collective Options

[Big Len]

Gentlemen;

I am posting this at the risk of seeming like a lazy ass, but I assure you I have tried to search many other sites and threads within 914World including tech articles. There must be threads on the subject, I just can't find them. I'm still not sure, so here goes.

I have a stock '74 with steelies and want to expand my wheel choices. The car will not be a daily driver nor an autocrosser, just for weekends. After looking at members pictures and PMing a few, I like the look of a black center (5 spoke Fuchs or BBS type mesh with a polished lip). I just received a 5 lug conversion kit from PMB.

I would rather not roll or widen any bodywork for originality's sake, but if I have to, I will. I also read that factory tolerances may vary. I also know, after using the wheel calculator, I'd like to keep the speedometer mostly accurate. (I know wheels aren't original, but a simple bolt on).

So the questions;

What are Fuchs hearts?

Fuchs are "deep" or "flat." Guessing that's the offset.

15 or 16 inch? There seems to be more tire choices for 16, but how will that effect ride/handling?

Offset seems to be the key here. What should I be avoiding?

Thank you in advance for your help.

Len