I don't want octogons, polygons, or any other *-togons. I want wheels. Caveman invented them, and I support them. I could care less about seats that have logos -- just give me some wheels that actually would be rollable on a real track
I think you have completely missed the point of what has been said...
Poly's are what make up those models that you see running on your computer. The higher the poly count, the higher quality video card you will need. To keep FPS speeds running at a good level for a larger demographic of computers to play at, you need to cut polies wherever you can. So, round objects such as wheels, barrels, and round corners are actually not perfectly round, simply because you can not make it round unless you have a whole crap load of polies. Even if you look at games like CoD 2, you'll notice that the barrels and wheels still have edges, although they are harder to notice simply because there is a higher poly count in the model.
I hope you see why you can't have 100% round wheels now, if not... well then... ok....