How ‘shiny’ do I want the wheel chrome to be? In my test render at maximum shininess, they seemed to be a distraction and drew too much attention to the eye.
I am not working for a car company and matching an established look, rather I am creating something that looks pleasing so its up to me to find the balance. I am testing the ‘roughness’ value on the specular properties starting at zero for maximum shine and going up in increments of .05 –
What I have learned –
As the roughness value goes up, the wheels start to move into a flatter, more diffused plastic kind of look. The renderer mimics a surface the has some granular texture which diffuses the light rays and bounces them out at angles. I prefer the lower values and the more chrome like look but for my taste .15 is just enough to break up the harshness and aliased feel you get at 0.