Guide: Installing Better Car Physics

Step-by-step guide to manually install Better Car Physics, which improves driving and towing.

Windows

1. Close the game and subscribe to the mod on the workshop, then wait for mod files to download.
2. Right click Project Zomboid in your Steam library, select Manage and "Browse local files".
3. In the address bar, click to go back up to steamapps folder and browse to workshop\content\108600\
4. Search for the mod ID 2909035179 and open the folder.
5. Browse to mods\BetterCarPhysics\manual_installation
6. You will see folders for each version of the game, the server currently uses the latest. For example, as of this writing (21st October 2026), you would open the 42.21.0 folder.
7. Copy the zombie folder inside.
8. Open a new File Explorer window for your Project Zomboid installation. Right click Project Zomboid in your Steam library, select Manage and "Browse local files".
9. Paste zombie folder *.
10. Launch Project Zomboid. On the main menu go to Mods and tick to enable Better Car Physics.

* Overwriting files

Build 42 has no zombie folder by default so it normally won't ask if you want to overwrite. However if you have old Build 41 files or a previous Better Car Physics version, click yes if it asks to overwrite.