No. I didn't paint the center cap. So far, I've painted two of my five wheels. The one in the OP I painted before mounting the tire. It has both the silver and the clear coats. The wheel on the right below I painted with the tire mounted but did not put clear coat on it. If you click to enlarge the image, you can probably see a little scuffing at the top right of the wheel on the right. The masking tape covered this area. I'll try to do a better job next time.
The paint instructions say to put on the two light coats and the medium coat about 10 minutes apart and all within an hour. I did this but didn't sand the silver before applying the clear coats. I suppose I'd get slightly different results.
I prefer the sheen of the OEM wheels, but I'll just have to get used to the more matte finish.
The wheels were scuffed and scratched a bit but no real damage. I used a regular sanding block to sand the scratches.
