Sim Racing & Assetto Corsa Glossary
New to sim racing? This comprehensive glossary explains all the terminology you'll encounter in Assetto Corsa and the sim racing community—from FFB to CSP to understeer.
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Assetto Corsa & Tools
AC
Assetto Corsa - the sim racing game by Kunos Simulazioni, released in 2014.
ACC
Assetto Corsa Competizione - the GT3/GT4 focused sequel released in 2019. Different game from AC.
CM / Content Manager
Third-party launcher and mod manager for AC. Replaces the stock launcher with advanced features like drag-and-drop mod installation, server browser, and graphics settings.
CSP / Custom Shaders Patch
Essential graphics mod by x4fab that adds night lighting, rain, animated parts, and modern visual effects to AC. Required by most modern mods.
SOL
Weather mod that works with CSP to provide realistic weather, clouds, and time-of-day transitions.
Pure
Alternative weather/graphics mod to SOL, known for more saturated colors and dramatic lighting.
GIRELLU
AI improvement mod that makes computer opponents race more realistically and aggressively.
Shutoko Revival Project (SRP)
Popular free-roam highway mod featuring the Shutoko Expressway in Tokyo, Japan.
Traffic Pack
Mod that adds AI traffic to tracks, commonly used on touge and highway maps.
Kunos
Kunos Simulazioni - the Italian game studio that created Assetto Corsa.
Physics & Car Handling
Understeer
When a car turns less than the steering input suggests, "pushing" wide through corners. Front tires lose grip before rear tires.
Oversteer
When a car turns more than intended, with the rear end sliding out. Can lead to spins if not corrected. Rear tires lose grip before front tires.
Neutral
Balanced handling where neither understeer nor oversteer dominates. The ideal setup for most driving styles.
Lift-off Oversteer
Oversteer caused by suddenly releasing the throttle mid-corner, shifting weight forward and unloading the rear tires.
Trail Braking
Advanced technique of continuing light braking into the corner entry to help rotate the car and maintain front-end grip.
Weight Transfer
Movement of the car's weight during acceleration, braking, and cornering. Managing weight transfer is key to fast, consistent driving.
Grip Limit
The maximum amount of traction available from the tires. Exceeding the grip limit causes sliding.
Slip Angle
The difference between where the tire is pointing and where it's actually traveling. All tires need some slip angle to generate grip.
Lock-up
When brakes are applied too hard and wheels stop rotating while the car is still moving. Causes flat spots and reduced braking.
ABS
Anti-lock Braking System - prevents wheel lock-up under hard braking. Can be turned off in AC for more realism.
TC / Traction Control
Electronic system that reduces wheelspin by cutting engine power. Adjustable in most AC cars.
ESC / Stability Control
Electronic system that applies individual brakes to prevent slides and spins.
Force Feedback & Hardware
FFB / Force Feedback
Motors in a racing wheel that provide physical resistance and vibrations to simulate road feel, tire grip, and steering weight.
Direct Drive (DD)
High-end wheel technology where the motor directly connects to the wheel shaft without gears or belts. Provides the most detailed FFB.
Gear-Driven
Wheel type using gears to multiply motor force. Budget-friendly but can feel notchy (e.g., Logitech G29/G923).
Belt-Driven
Wheel type using belts instead of gears. Smoother than gear-driven, mid-range price (e.g., Thrustmaster T300, T-GT).
Clipping
When FFB signal exceeds what the motor can output, causing loss of detail. Occurs when FFB strength is set too high.
Nm (Newton-meters)
Unit measuring torque/force output of a wheel. Higher Nm = stronger FFB (e.g., Logitech = ~2Nm, Fanatec DD = 8-12Nm, Simucube = 25Nm+).
Load Cell
Pressure-based pedal technology that measures force rather than distance. More consistent and realistic than potentiometer pedals.
Potentiometer
Basic pedal sensor that measures the physical position of the pedal. Found in entry-level pedals.
Deadzone
Area of input range where no response occurs. A small deadzone prevents drift; too large makes controls feel unresponsive.
Linearity
How input maps to output. Linear = 1:1 mapping. Non-linear can make center of steering more sensitive or less sensitive.
H-Pattern
Manual shifter layout like a real car with gear positions arranged in an H shape.
Sequential
Shifter where you push forward to downshift and pull back to upshift, like motorcycle or race car sequential gearboxes.
Paddle Shifters
Shift buttons mounted behind the wheel for quick, fingertip gear changes.
Racing Lines & Techniques
Racing Line
The optimal path through a corner that allows the highest speed. Generally: outside entry → apex → outside exit.
Apex
The innermost point of the racing line through a corner. "Hitting the apex" means touching the inside of the corner at the right moment.
Early Apex
Turning in too soon, causing you to run wide on exit. Common beginner mistake.
Late Apex
Delaying the turn-in to hit the apex later. Allows earlier acceleration on exit. Fast technique for many corners.
Turn-in Point
Where you begin steering into a corner. Key to getting the corner entry right.
Braking Point
Where you start braking before a corner. Moving the braking point later ("braking deeper") is a common way to gain time.
Track-out
Using all the track width on corner exit to maximize speed while straightening the wheel.
Clipping Point
Same as apex - the point where your car touches the inside of the corner.
Curb / Kerb
The raised edge at the inside and outside of corners. Can be used to widen the racing line, but too much can unsettle the car.
Chicane
A tight sequence of corners that alternate direction, used to slow down cars on straights.
Hairpin
A very tight, often 180-degree corner. Requires heavy braking and slow entry.
Straight
A section of track without significant corners where you can reach top speed.
Car Setup & Tuning
Setup
The configuration of a car's suspension, aero, gearing, and other adjustable parameters for specific conditions or preference.
Camber
The angle of the wheels relative to vertical when viewed from the front. Negative camber tilts the tops of the tires inward.
Toe
The angle of the wheels relative to the car's centerline. Toe-in points the fronts of the tires toward each other.
Caster
The angle of the steering axis. More caster increases steering weight and self-centering but requires more effort.
ARB / Anti-Roll Bar / Sway Bar
Connects left and right suspension to limit body roll. Stiffer ARB = less roll but can reduce grip.
Spring Rate
How stiff the suspension springs are. Stiffer springs = faster response but less grip over bumps.
Dampers / Shocks
Control the speed of suspension movement. Bump = compression; Rebound = extension speed.
Ride Height
How high the car sits above the ground. Lower = more downforce and stability but can bottom out.
Downforce
Aerodynamic force pushing the car down onto the track, increasing grip at high speed.
Drag
Air resistance that slows the car. More downforce usually means more drag.
Aero Balance
The ratio of front to rear downforce. Affects handling at high speed.
Gear Ratios
The relationship between engine RPM and wheel speed. Shorter ratios = faster acceleration but lower top speed.
Final Drive
The last gear ratio before the wheels. Lower = more acceleration; Higher = more top speed.
Diff / Differential
Allows wheels to rotate at different speeds in corners. LSD (Limited Slip Differential) controls how much power goes to each wheel.
Brake Bias
The ratio of braking force between front and rear wheels. More front = stable under braking; more rear = rotating but can lock up.
Telemetry & Data
Telemetry
Data recorded during driving including speed, throttle, brake, steering, tire temps, etc. Used for analysis and improvement.
Delta
The time difference between your current lap and a reference lap (usually your best or a ghost).
Ghost
A translucent car showing your previous fastest lap, used to compare your current performance.
Sector
A portion of the lap. Most tracks are divided into 3 sectors, each with its own time.
Personal Best (PB)
Your fastest time on a particular track/car combination.
Theoretical Best
The time you would achieve by combining your best sectors into one theoretical lap.
Invalid Lap
A lap where you exceeded track limits (went off track), making it ineligible for timing.
Tire Temps
Temperature of the tire surface. Optimal grip is in a specific temperature range; too hot or cold reduces grip.
Tire Wear
How much the tire has degraded during use. Worn tires have less grip.
Fuel Load
Amount of fuel in the car. More fuel = heavier car = slower but longer range.
Online & Multiplayer
Server
An online game session hosted on a computer that other players can join.
Ping / Latency
The time (in milliseconds) for data to travel between you and the server. Lower = less lag.
Rubber-banding
When cars appear to teleport or jump around due to lag or connection issues.
Track Day
Casual online session focused on practice and fun rather than racing.
League
Organized championship with scheduled races across multiple events.
Practice
Session for learning the track and testing setups before qualifying/racing.
Qualifying (Quali)
Timed session to determine starting positions for the race.
Grid
The starting positions and/or the lineup of cars before a race.
Pole Position
First place on the starting grid, earned by the fastest qualifying time.
Blue Flag
Flag shown to a lapped car, indicating they should let faster cars pass.
Yellow Flag
Caution - slow down and no overtaking. Usually means there's an incident ahead.
Punt / Divebomb
When a driver makes an over-aggressive move and hits another car. Generally frowned upon.
Netcode
How well the game synchronizes positions of cars across the network. Good netcode = consistent racing with less warping.
Mod Types & Content
Car Mod
A user-created car that can be added to the game. Quality ranges from basic conversions to highly detailed recreations.
Track Mod
A user-created track or circuit. Can be real-world locations, fictional, or fantasy tracks.
Skin / Livery
Custom paint scheme or design that changes how an existing car looks. Usually a texture replacement.
App
An in-game overlay that displays additional information like lap times, tire data, fuel, etc.
Sound Mod
Custom audio files that change engine sounds, exhaust notes, or ambient track sounds.
PP Filter
Post-processing filter that changes the game's visual style - color grading, contrast, saturation, etc.
Physics Mod
A mod that alters the handling and physics behavior of cars or the game itself.
Conversion
A car or track adapted from another game. Quality varies significantly.
Scratch-built
A car or track created from the ground up specifically for AC. Usually higher quality than conversions.
Data Pack
Shared physics or data files that multiple mods from the same creator may require.
Learn More
Now that you know the lingo, dive deeper with our comprehensive guides: