ACC Custom Livery Material Properties

An overview of some of the material properties you can use in your own Assetto Corsa Competizione custom livery designs

A lot of people ask me about how to get different paint finishes in Assetto Corsa Competizione. With the in-game livery editor this is quite easy as there's a number of preset finishes for you to choose from. But if you're making your own design, you'll need to update the values in your decals.json and sponsors.json livery files.

The advantage of this approach is that you can use 'default' values based on Kunos' original liveries, or you can play about with the values to create more subtle effects.

Here's how to duplicate the default material properties:

"baseRoughness": 0, "clearCoat": 1, "clearCoatRoughness": 0, "metallic": 0

"baseRoughness": 0.45, "clearCoat": 0.3, "clearCoatRoughness": 0.6, "metallic": 0

"baseRoughness": 0.45, "clearCoat": 0.1, "clearCoatRoughness": 0.3, "metallic": 0

"baseRoughness": 0, "clearCoat": 1, "clearCoatRoughness": 0, "metallic": 0.625

Satin Metallic:
"baseRoughness": 0.3, "clearCoat": 0.5, "clearCoatRoughness": 0.3, "metallic": 0.7

"baseRoughness": 0, "clearCoat": 1, "clearCoatRoughness": 0, "metallic": 0.9

You can customise these values between 0-1 to create different paint effects, and remember you can work with both the decals and sponsors layers.


A couple of people have asked me what the Wild things Racing livery material properties are, so here they are:

"baseRoughness": 0.3,
"clearCoat": 0.5,
"clearCoatRoughness": 0.3,
"metallic": 0.9

"baseRoughness": 0,
"clearCoat": 1,
"clearCoatRoughness": 0,
"metallic": 0

I hope this post helps with your own custom livery design. If you have any questions please feel free to contact me via twitter @LaPope79

Back to blog
More sim racing posts: