

Here you could use the color tap instead.

Plug your Metallic map in the "Mask"-Dropdown and invert it with the colorizer-shader Plug your base color texture in the "Layer Color"-Dropdown in the texture option Create a new Labert Layer and name it Base Color I will show the other variant, that looks more realistic, but needs more rendertime.

There is the other option, to use the reflectance channel for everything. But the shading doesn't look very realistic. You can use the color-channel for the base color. There is a decision, that has to be made. However, if you want to use pre-rendered PBR-Textures, or you use an older Version, here is an explanation. Since C4D Version R18 there exists a Substance Engine plugin.
