I find a script about tire mark in wiki
http://www.unifycommunity.com/wiki/index.php?title=TimeBasedTrailRenderer
According to the article I attached this script and set material, size and color, but it does not work. Anyone use this script?
I could be wrong but afaik a trail renderer isn’t quite applicable for tire marks. It’s more for effects like localized quasi-motion blur, for example the trail of a swinging melee weapon.
For tire marks, footprints and the like, I’ve mostly seen decal based approaches.