ACNG 0.3.1 beta - Clearer tire HUD

ACNG freeroam 0.3.1 beta for BeamNG.drive 0.39.4. This is an actual downloadable mod release; ACNG remains in beta while development continues.

HUD fixes

• Taller tire tiles, raised above the bottom edge.
• Complete rear pressure rows and wrapping GRAIN / BLISTER / DIRT / PUNCTURED labels.
• Explicit TREAD percentage appears only when tire wear is enabled.

The tire physics are unchanged in this patch. The fresh isolated showcase runs prove heating/cooling, dirt pickup/cleaning and wear-triggered native punctures: 54/54 checks. The rapid burnout in the showcase explicitly uses WEAR x10; it does not represent normal wear speed.

Validation: 283 Python tests, all 10 Node suites and publication audit pass.

Install

1. Close BeamNG. Download acng-freeroam.zip and place it in your BeamNG mods folder (launcher > Open user folder > mods).
2. Disable any older ACNG ZIP to avoid duplicate mods.
3. Add the ACNG and ACNG Tires UI apps. Existing custom layouts may retain their saved dimensions: resize the tire app if needed.

Master and features start OFF. Stock suspension, deformation and damage remain authoritative. No cars, maps, converted assets or videos are included. acng-freeroam.build.json records the exact source commit and SHA256 hashes.

ACNG 0.3.0 beta

ACNG freeroam beta for BeamNG.drive 0.39.4. Source 9ed0801 (recorded in the build manifest).

This is a pre-release. It is playable, but features are still changing and bugs are expected.

What's new since freeroam-2026-10-09:

• AC-style tire model (turn Tires on):
  • Each tire has inner, middle and outer tread temperatures. A tire cooked on one edge loses grip even when its average looks fine.
  • Each tire has an ideal hot pressure. Running far from it costs grip, so cold tires and low pressures are slower.
  • Sliding a cold tire grains it, and the grain wears off again once the tire is driven in its window. Sliding a hot tire blisters it, and blisters stay until fresh tires.
  • Driving off tarmac picks up dirt that costs grip back on the road until it wears off.
  • New tires need a short scrub-in.
  • Tested in game: 28/28 checks on a skidpad. Dirt and road feel are not tested in game yet.
• The ACNG Tires app shows the three tread temperatures, pressure against the ideal, and GRAIN / BLISTER / DIRT tags.
• Minimal HUD: ACNG Control is a small translucent ON/OFF pill (Advanced opens the full panel). ACNG Tires is four transparent tiles that only show while the tire model is on.

262 Python checks and 10 UI test suites passed.

Install:

1. Close BeamNG.
2. Download acng-freeroam.zip below and put it in your BeamNG mods folder (Windows: %LOCALAPPDATA%\BeamNG\BeamNG.drive\current\mods, or use "Open user folder" in the BeamNG launcher). Remove or disable any older ACNG zip.
3. Start BeamNG, add the ACNG app in UI Apps, spawn a car and turn the master ON.

Master and every feature start OFF. BeamNG's own suspension, deformation and damage stay in charge.

No maps, cars or other game assets are included.

acng-freeroam.build.json lists the SHA256 of the zip and every file in it.

ACNG freeroam 2026-10-09

ACNG freeroam build for BeamNG.drive 0.39.4. Early prototype. Source a936120 (recorded in the build manifest).

What's new since freeroam-2026-10-08:

• Tire compounds: Auto picks road, sport or race from the car's fitted tires. Each compound has its own grip, warm-up window and wear (road 0.6x, sport 1x, race 1.7x wear).
• Tire heat limit: grip fades from 200 C and friction heat stops at 250 C, so burnouts and long drifts can't run away. Hot or burning rubber wears faster. (Unit-tested; a full in-game burnout run is still pending.)
• A tire worn to zero tread punctures, using BeamNG's own puncture.
• The ACNG control app is now a small strip in free roam instead of a large panel.

222 Python checks and 10 UI test suites passed.

Install:

1. Close BeamNG.
2. Download acng-freeroam.zip below and put it in your BeamNG mods folder (Windows: %LOCALAPPDATA%\BeamNG\BeamNG.drive\current\mods, or use "Open user folder" in the BeamNG launcher). Remove or disable any older ACNG zip.
3. Start BeamNG, add the ACNG app in UI Apps, spawn a car and turn the master ON.

Master and every feature start OFF. BeamNG's own suspension, deformation and damage stay in charge.

No maps, cars or other game assets are included.

acng-freeroam.build.json lists the SHA256 of the zip and every file in it.

ACNG freeroam 2026-10-08

Current ZIP update: TREAD is the wear readout; thermal GRIP has its own label and only appears with heat enabled. Player ZIP source: 55c6fa8 (recorded in the build manifest); original daily source tag retained. 164 Python checks and six UI suites passed. Local car content is not included.

ACNG freeroam build for BeamNG.drive 0.39.4. Early prototype.

Install:

1. Close BeamNG.
2. Download acng-freeroam.zip below and put it in your BeamNG mods folder (Windows: %LOCALAPPDATA%\BeamNG\BeamNG.drive\current\mods, or use "Open user folder" in the BeamNG launcher). Remove or disable any older ACNG zip.
3. Start BeamNG, add the ACNG app in UI Apps, spawn a car and turn the master ON.

Master and every feature start OFF. Includes Road/Sport tire heat, tire wear, ABS/TC, FFB settings, HUD, timers, lap tools and optional pit service. BeamNG's own suspension, deformation and damage stay in charge.

No maps, cars or other game assets are included.

acng-freeroam.build.json lists the SHA256 of the zip and every file in it.