At 400 km/h, even the Autobahn’s longest straight sections (e.g., Calais–Duisburg road) become too short to maintain speed for more than 8–10 seconds. 8. Known Issues & Workarounds | Issue | Cause | Solution | |-------|-------|----------| | Truck flips on slight bumps | Suspension too soft | Increase /def/vehicle/truck/.../chassis.sii shock_absorber: 50000 | | Engine overheats instantly | Modded RPM exceeds cooling model | Add engine_brake_torque: 4000 | | No speed above 360 km/h | Air drag coefficient | In /def/vehicle/truck/.../chassis.sii , set air_resistance: 0.8 (default 3.0–5.0) | | AI traffic freezes | Game pathfinding breaks at >300 km/h | Use console: g_traffic 0 (disables AI) | 9. Conclusion A 400 km/h mod for ETS2 is entirely achievable by modifying engine torque curves, raising the RPM limit, changing differential ratios, and adjusting physics parameters. However, the game’s map scale and road design are fundamentally incompatible with such speeds. The mod is best used for testing, empty highway runs in a private session, or as a proof-of-concept for extreme vehicle modification in the SCS engine. Warning: Do not use on multiplayer (TruckersMP) – you will be banned for speed hacking. Always back up original .sii files. Appendix A – Quick-start pre-made values for 400 km/h Engine: rpm_limit: 5500 , final ratio 0.65 , air_resistance: 0.9 , brake_torque: 18000 .
ProMods’ Iceland – Ring Road has a 14 km straight with no traffic spawns. euro truck simulator 2 speed mod 400 km h
uset g_speed_limit "400.0" At 400 km/h, default truck physics fail: brakes overheat instantly, steering becomes lethal, and trailers jackknife. 5.1 Braking fix Edit /def/vehicle/physics.sii : At 400 km/h, even the Autobahn’s longest straight
torque_curve[]: (400, 0.9) torque_curve[]: (1200, 1.0) torque_curve[]: (4000, 0.95) # sustained torque at high RPM torque_curve[]: (5000, 0.85) rpm_limit: 5500 # critical for top speed A diesel engine would explode above ~2800 RPM in reality, but this is a mod. 3.3 Transmission gear ratios Open /def/vehicle/truck/<truck_model>/transmission/<transmission_name>.sii Conclusion A 400 km/h mod for ETS2 is
torque_curve[]: (400, 0.9) torque_curve[]: (1400, 1.0) torque_curve[]: (2200, 0.7) rpm_limit: 2500
differential_ratio: 3.08 ratios: [12.0, 8.2, 5.6, 3.9, 2.6, 1.8, 1.0] Modified for 400 km/h (ultra-tall overdrive):
differential_ratio: 1.80 ratios: [8.0, 5.4, 3.8, 2.6, 1.6, 1.0, 0.65] # 0.65 = extreme overdrive Even with the above, the game’s internal limiter may cap you at 90 km/h (default) or 170 km/h (after removing limiter in options). 4.1 In-game settings Go to Options → Gameplay → Truck speed limiter → UNCHECK . 4.2 Console command (developer mode) Enable developer mode in config.cfg :