Got hooked on the game, decided to give it a try! I think it's pretty good.
Muddying the ground to original songs!
Enjoy your rides!
P.S. For those interested! There are many more songs (finished and in "drafts") For professional recording - https://money.yandex.ru/to/410015305698654

The archive contains three bat files for clearing the Spintires: MudRunner cache:

1) Full cache clear (complete game settings reset).bat - a standard cache clear (deletes the SpinTires MudRunner folder located at \AppData\Roaming\), works from any location - just run it.

2) Cache clear (without resetting game settings).bat - clears only the game cache (does not touch user settings), works from any location - just run it.

3) Clear Media folder and cache.bat - my own creation: needs to be placed in the game folder; when run, it deletes the Media folder with all its contents and creates a clean Media folder + clears only the game cache (does not touch user settings).
Convenient for testing mods on a clean version of the game without having to configure the game each time.

All files operate automatically - just run and done :)

There are 3 variants of the SUV. It has 7 of its own addons, its own sounds.

Brings the behavior of dirt in the game closer to reality.

Now, if you fly into the mud at full speed, respectively, mud splashes heavily stain the car, when slipping and driving through mud on high gear as well, but to a lesser extent, well, etc., depending on the selected speed mode.
The mud splashes themselves and their physics have been made more realistic, ridiculous lumps on wheels have been removed (thanks to Soul Reaver for that) and dry small hard lumps flying out from under the wheels, only slush has been left, its intensity has been increased at gears 1+ and higher.
Pollution on cars now has volume, which also adds realism.

I recommend using it with the following additions, it will greatly darken the visual effects of the new dirt:
SweetFX graphics improvement
Always the sun+Fog Reduction+Blue sky
Removing graphics noise

To work in multiplayer:
Do not install SweetFX. Use SpinTiresMod.exe with the original files in the game disabled.
PS. Many thanks for the help to Alexander Oboskalov.

Installation:
In case you don't like it, the archives of the game Media, MeshCache, TextureCache copy and save in a separate folder.
Copy files from the downloaded archive to the game archives, agreeing to a replacement.
In any unclear situation, we clean the cache.

Have a nice ride!

A recording of the developers' stream has leaked online, showing the first gameplay: SpinTires MudRunner - American Wilds!

Enjoy watching!

MeshConvert - a mesh editor for the Spintires format (those in MeshCache or _m)
MeshConvert saves ST game meshes for different game versions.
But not all meshes can be converted correctly; it is preferable to use the original X-meshes (with the .x file extension).
Also, MeshConvert can be used to edit the mesh XML.

Usage:
With this program, you can convert vehicles from the 03.03.16 version, specifically cached mesh files, to MudRunner.
Important! Don’t forget to then distribute all texture and model files into the necessary folders (which should be created beforehand): meshes go into the _m folder, and textures into the _t folder, accordingly. And provided the vehicle config in classes/trucks is correct, taking into account the new requirements for wheels and steering response. Also, the correct config for the wheels themselves in classes/wheels. The vehicle will appear in the game, though without drive shafts, as mentioned by the user above. Difficult? Possibly for some. But those familiar with the subject will figure it out.
How to use: unpack the downloaded executable into any folder. Double-click it, and in the window that appears, at the very bottom above the Load and Save buttons, select the path to the desired model (vehicle, addon), open the mesh, then click Load, and after that Save. A file with the _converted suffix will appear next to the model in the folder. This will be the finished mesh. Delete the old one, remove the suffix from the filename. That’s it.
Thanks for the instructions: Denis Korolev.

Source: SPINTIRES HARDCORE group

Mod has two versions of the truck:
MAN TGS 41.400 (red) has 11 of its own addons
MAN TGA 40.480 (blue) has 16 of its own addons
View from the cockpit without the instrument panel.
Own cargo.
Animation of steering wheel, body, muffler, cab.

A model from Farming Simulator.
The revision of the Master Shadow model (Added the 3rd axis and made springs).
Has different animations including a working balancer.
Maersk Credits Model:Andrey M., Thomas, Tomson.
All rights to the models are reserved for their authors!
Special thanks to: yansors
Mod made: Dmitry Kharisov aka Master Shadow

Update 1.21 (03/16/18):
Thank you for the identified bugs and shortcomings, fixed the texture on the semi-trailer, where the textures were not displayed, the texture on the blue body, where the shoe was not displayed!
Man 8x8: fixes the animation of the cockpit, and the gimbal. The addons on the cab no longer live their own lives.
Man 6x6: fixed a bug when installing addons on the cab!

There are two versions in the archive: autumn and summer to choose from.

Details:
- 1 garage (closed);
- 10 points of exploration;
- 2 refills;
- 5 sawmills + 2 Loading points;
- 7 Cars + 4 starting slots;
- Map size: 1 km x 1 km.

- Added autumn version.
- 2 garages (closed);
- 2 gas stations;
- 2 loading of logs + auto-loading;
- 6 sawmills;
- 6 points of exploration;
- 2 slots for cars.

Map editor with the ability to convert maps to the new version of the game MudRunner 18/03/06.
If the map does not open after conversion, you need to reselect all the vehicles.

Tested on "Blackwater Canyon" - everything works.
The archive contains two versions: 32-bit and 64-bit.