[Hemicolt]

Actually if you do it correctly, you go by section and tread width. I learned this by going to tire seminars and learning from chassis builders who knew what they are talking about. And there was plenty of info about street tires.
Here again, some peoples first priority isn't looks. They want their tires to have an even contact patch on the road. Here is a 255/70/15, which has the measurements I spoke about. Around 28"tall, 8.5" of tread and a section width of 10.25". It is mounted on a 8" rim. The tire has a nice bulge on the side wall and has dead flat wear pattern and looks right. A L60 with a 12" to 12.25" section width is 2" wider than this tire. To wide for this 8" rim. This is my priority because I put more than 8000 miles a year on my car.
Another example, a 235/60/15 mounted on a 8" rim. You can see a bulge on the side wall and flat contact patch. This tire also has a section width of 9.75" to 10", not 12". Looks good and flat tread. This is priority for Todd because he is going to put 1000's of miles a year on this car.
I really can't tell from the side view, but the top picture of the Camaro looks like the center of the tire is raised higher than the edges. I can't tell on the Mopar, but I think it looks good from the side. But I wouldn't pass any kind of judgment until I could see the contact patch.
If the Camaro in the bottom picture has a flat contact patch, the tread is 9", the rim is a 10" and the section width is 12" to 12.25", I can go with that. But that's me. I like proper function 1st and looks 2nd.
None of this really means any of us is right or wrong. To the appearence first people, they are right because they like the way it looks and that's all that matters.
To the function first people, they are right because they want proper wear pattern and that's all that matters.
To the purist people, they are right because they ran 7" rims back in the day and that's all that matters to them.
The man asked if anyone thought there was a tire size needed. I gave him my answer. Around 28" tall, 10" section, 8.5 tread and that's all that matters to me.