You asked where you could find textures for 3ds Max 2021, hence was my answer.
To make it work in KRP, you can find any tileable texture and amend it with the image editor of your choice to meet the following requirements:
Supported texture formats:
(Source: http://docs.piboso.com/wiki/index.php?title=Track_Creation_Guide)
To make it work in KRP, you can find any tileable texture and amend it with the image editor of your choice to meet the following requirements:
Supported texture formats:
- truecolor TGA
- truecolor BMP
- DXT1, DXT3 or DXT5 DDS
(Source: http://docs.piboso.com/wiki/index.php?title=Track_Creation_Guide)