As for the centre caps I was just asking generically, do centre caps usually come with wheels? As you can tell, I've never bought a set of wheels
You normally get centre caps. Work don't give them though and don't sell them for some wheels, (race look).
As for wheel nuts, it depends on the design of the wheels. Some have to have the slim wheel nuts. Also, stock wheel nuts are quite long to fit in the hole and look stupid on some designs. I bought some short wheel nuts for my Work Wheels.