Sim Racing Glossary 2026: 60+ Terms Every Sim Racer Should Know
Sim racing has its own language — and if you're just starting, it can feel like reading hieroglyphics. This glossary explains every term you need, from basic wheel types to advanced telemetry.
Whether you're buying your first wheel or tuning a direct drive setup for competitive racing, sim racing terminology can be overwhelming. We've written this glossary for sim racers at every level — bookmark it, share it, and refer back as you progress.
Sim Racing Basics
Sim Racing
The practice of using racing simulation software combined with dedicated hardware (wheel, pedals, sometimes cockpit) to replicate the experience of driving a race car. People sim race for fun, to practice real-world skills, or to compete in online championships.
Rig
Shorthand for your complete sim racing setup — wheel, pedals, cockpit, sometimes a shaker system or button box. When someone says "my rig," they mean everything bolted together.
DD (Direct Drive)
Short for Direct Drive. A type of wheel base where the motor connects directly to the steering shaft with no gears or belts in between. DD wheels deliver the most precise and powerful force feedback available. See our best direct drive wheel guide for recommendations.
FFB (Force Feedback)
Short for Force Feedback. The system that sends resistance to your wheel based on what's happening in the simulation — tyre grip, road surface, car balance. Better FFB means you can feel the car more clearly and drive faster.
Load Cell
A pressure sensor in brake pedals that measures force rather than pedal travel. Load cells give you consistent, precise braking because you're controlling pressure, not position. They're the single biggest upgrade from budget to mid-tier pedals.
Wheels & Wheel Bases
Direct Drive (DD) Wheel Base
A wheel base that uses a servo motor connected directly to the steering column. Because there's no mechanical intermediary, DD bases deliver instant, smooth, and powerful force feedback with no torque limiting or belt stretch. They're the gold standard in 2026.
Belt Drive
A wheel base type that uses a rubber belt to transfer motor power to the steering shaft. Belt drives are smoother and stronger than gear drives, quieter than gear, and sit in the mid-range price category. Popular examples include the Fanatec Podium series and some Logitech setups.
Gear Drive
The most budget-friendly wheel base type, where a motor gear meshes directly with the steering shaft gear. You'll find gear drives in entry-level wheels like the Logitech G29 and Thrustmaster T300. They're functional but can feel notch-y compared to belt or DD.
Torque
The rotational force your wheel base can produce, measured in Newton-meters (N·m). Higher torque means a heavier, more detailed feeling wheel — but more isn't always better if the FFB isn't well-tuned. Most serious sim racers target 10–25 N·m.
N·m (Newton-meter)
The standard unit for measuring wheel base torque. One N·m is roughly the force of holding a small apple at arm's length. A typical DD base might produce 15–20 N·m; high-end bases push past 25 N·m.
Servo Motor
The type of electric motor used inside direct drive wheel bases. Servo motors provide precise position control and high torque output, which is why they're also used in industrial robots and CNC machines.
DD1 / DD2
Fanatec's flagship direct drive wheel bases. The DD1 is the 20 N·m base, the DD2 pushes to 25 N·m. Both are considered reference-class hardware in the sim racing world, paired with Fanatec's ecosystem of wheels and pedals.
Ecosystem
The hardware ecosystem is the platform you buy into — all the wheels, pedals, and accessories that work with your base. Major ecosystems include Fanatec (ClubSport), Moza, Simagic, and Logitech. Switching ecosystems means replacing your whole wheel base, so choose carefully.
Pedals
Potentiometer Pedals
Entry-level pedals that use a potentiometer (variable resistor) to measure pedal position. The throttle and clutch on most budget wheels are potentiometer-based. They're fine for starting out but wear out over time and don't offer the precision of load cells.
Hydraulic Pedals
Premium pedals that use fluid pressure to create resistance, closely mimicking the feel of real race car pedals. Hydraulic setups like the Heusinkveld Sprint offer the most realistic pedal feel available, with adjustable firmness and travel.
Brake Pedal Travel
The distance your brake pedal moves from rest to full compression. Combined with load cell pressure, brake travel helps you find your brake zone. Race pedals let you adjust pedal travel and dead zone to match your preference and driving style.
Bite Point
The point in brake pedal travel where the pads first contact the disc — in sim terms, where you start to feel pressure building. Finding your bite point consistently is key to repeatable braking. Load cell pedals make this more intuitive because you control pressure directly.
Creep
The unwanted forward motion that happens when you lift off the clutch too slowly — the car inches forward even with no throttle input. Creep is a real-world automatic transmission behavior; in sim racing, it depends on whether the simulation models torque converter lockup realistically.
ELB (Elastomer) Pedals
Budget pedal sets — like the Logitech G29 throttle/brake — that use rubber bushings or elastomer pads for resistance. They're affordable and decent for beginners, but lack the feel and durability of load cell or hydraulic pedals.
Clutch Pedal
The third pedal (on H-pattern setups) that disengages the clutch to let you shift gears. Sim clutch pedals either model a traditional biting point (for H-shifters) or work as a simple on/off switch (for sequential shifters). Sequential setups don't require a clutch pedal at all.
Cockpits & Rigs
Cockpit / Rig
The frame that holds your wheel, pedals, and sometimes your screen or VR headset. A proper cockpit provides rigidity — no flex when you're wrestling the wheel — and positions you correctly for your FOV. See our best sim racing cockpit guide.
Direct Mount
When your wheel base and pedals are bolted directly to the cockpit frame — no clamps, no cradles. Direct mounting eliminates flex and gives the most precise steering feedback. It's the preferred method for serious sim racers.
Cradle Mount
When your wheel base sits in a cradle or clamp that attaches to a desk or cockpit. Budget-friendly but can introduce flex. If you're using a wheel on a desk, a good clamp is far better than a basic desk edge clamp.
Shaker Table
A system of bass shakers or transducers mounted to your cockpit that vibrate in response to engine RPM, bumps, kerbs, and crashes. Shakers don't replace good FFB — they add a physical layer of immersion you feel through your seat and feet.
Aluminum Profile
Extruded aluminum framing (typically 8020-style) used to build custom sim cockpits. Aluminum profiles are strong, adjustable, and modular — you can rebuild or expand your rig over time. Many sim racers start with a catalog cockpit and eventually build or upgrade to an aluminum profile rig.
GT Style vs Formula Style
GT-style cockpits position the wheel lower and more upright, replicating a touring car or GT car driving position. Formula-style cockpits (like F1 cockpits) have the wheel mounted low and far away, with pedals pushed forward and wheel columns angled steeply — like an open-wheel car. Choose based on what you race most.
FOV (Field of View) — Cockpit Setup
The angular width of your in-game view that matches your real screen position and distance from the wheel. Correct FOV makes the sim feel faster and improves your ability to judge braking points and corner exits. Too narrow FOV makes everything look far away; too wide makes it look like a fish-eye lens.
Force Feedback (FFB)
Force Feedback
The system that makes your wheel push back against your hands based on simulation data — tyre grip, road texture, aerodynamic forces, and car balance. Good FFB is the difference between feeling connected to the car and driving blind. If you're new, see our direct drive wheel comparison for the strongest FFB hardware.
FFB Clip / Clipping
When the force signal from the sim exceeds what your wheel base can physically deliver, the signal gets cut off (clipped) at its maximum. You'll hear this called "FFB clipping" — it sounds like a sudden drop in wheel weight. Most high-end bases list a "peak torque" spec specifically because buyers want to avoid clipping.
Peak Force vs Continuous Force
Peak force is the maximum torque the base can deliver for brief moments. Continuous force is what it can sustain indefinitely. Peak matters for sudden bumps and kerb strikes; continuous matters for long races where you're holding the wheel at speed. Always check both specs.
Road Feel / Tyre Feel
What good FFB lets you perceive through the wheel. Road feel includes tyre load (how hard the front end is working), surface texture (kerbs, rumble strips), and suspension compression. A wheel that communicates tyre slip and grip limits is called "tyres feel" — it's the hallmark of a well-tuned DD system.
Spring — FFB Effect
An FFB effect that applies a constant centering force to the wheel, like a spring pulling the wheel back to center. Springs are often used in low-end wheels or as a fallback effect. They feel artificial compared to true DD FFB, which models physics directly.
Damper — FFB Effect
An FFB effect that adds resistance to wheel movement — it slows the wheel down, making it feel heavier. Dampers are sometimes added in FFB settings to smooth out noisy FFB signals, but too much damper makes the wheel feel sluggish and disconnected.
Friction — FFB Effect
An FFB effect that adds constant drag to the wheel, independent of what the sim is doing. Like a damper, excessive friction in your FFB settings will deaden the wheel and hide real car feedback. Used subtly, friction can quiet a noisy signal; overdone, it's the enemy of feel.
Understeer / Oversteer
Two types of handling balance loss. Understeer is when the front tyres lose grip first — the car keeps going straight despite steering input. Oversteer is when the rear tyres break loose first — the tail swings around. A well-tuned FFB wheel lets you feel both happening through your hands: understeer loads the wheel, oversteer unloads it suddenly.
Natural FFB vs Artificial FFB
Natural FFB simulates physics directly — the game calculates real forces and sends them to the wheel. Artificial FFB builds effects from non-physics signals (speed, slip angle thresholds, etc.) and layers them together. Different sims use different philosophies: Assetto Corsa and rFactor 2 lean toward natural; older games or console titles often rely more on artificial effects.
Games & Platforms
iRacing
The subscription-based online racing platform considered the most competitive and realistic for online multiplayer. iRacing hosts official races with licensed tracks and cars, uses a licence system (SA/iR), and attracts serious racers. It's not cheap — subscription plus content purchases add up — but its matchmaking and race integrity are unmatched.
Assetto Corsa Competizione (ACC)
The GT-focused racing simulation built on the Assetto Corsa engine. ACC is known for excellent tyre physics, particularly in wet conditions, and is the platform of choice for GT3 racing leagues. It runs well on mid-range hardware and has a strong modding community building extra content.
Assetto Corsa (AC)
The original Assetto Corsa — an open modding platform that has accumulated thousands of community-created cars, tracks, and physics mods over the years. AC's strength is variety: if it exists in racing, there's probably a mod for it. The base game physics are solid, and Sol / CSP mods significantly enhance graphics and physics.
rFactor 2
A physics-first simulation by Studio 397. rFactor 2 has a smaller community than ACC or iRacing but is respected for its tyre model and dynamic weather / track surface evolution. It excels in endurance racing and has an active modding community.
Automobilista 2
A Brazilian sim developed by Reiza Studios that runs on the ISI engine — the same foundation as the original rFactor. Automobilista 2 covers an enormous range of content from vintage Formula cars to modern GT, with physics praised by many sim racers who prefer its raw, analogue feel.
RaceRoom Racing Experience
A free-to-play racing sim focused on touring cars, GT, and formula vehicles. RaceRoom has excellent audio, a solid FFB, and a growing selection of free tracks and cars. It's a great starting point if you want to try sim racing without spending money upfront.
Gran Turismo 7 (GT7)
The PlayStation-exclusive racing game from Polyphony Digital. GT7 is more of an accessible racing experience than a hard-core simulator — it sits between casual arcade and simulation. Great for starting out on console, with excellent graphics and a huge car collection, though its physics and FFB aren't on par with PC sims.
rF2 Plugin — Pit-to-Car Radio
Community-developed plugins for rFactor 2 that enable real-time voice communication between a race engineer (real or AI) and the driver — the same pit-to-car radio system used in real motorsport. It's one of rFactor 2's strengths for immersive endurance racing.
Crew Chief
A popular AI spotter and race engineer application that runs alongside your sim and provides voice commentary — calling out incoming cars, fuel and tyre strategy, fastest lap sectors, and race incidents. It's essentially having a virtual race engineer without needing a real person on comms.
SimHub
Free software for creating custom dashboards, button boxes, and telemetry displays that pull data from your sim in real time. SimHub works with most major sims and lets you connect Arduino or other hardware to build physical button boxes and shift lights.
Tuning & Setup
Alignment / Geometry
Collectively refers to camber, caster, and toe — the three geometric angles that determine how your car's tyres contact the road. In sim racing, alignment is adjusted in the garage setup menu and dramatically affects tyre wear, grip, and handling balance.
Camber
The angle of the tyre relative to vertical, viewed from the front of the car. Negative camber (top of the tyre tilting inward) increases tyre contact patch during cornering. Getting camber right for your driving style and track is one of the first setup changes beginners should experiment with.
Toe
The angle of the tyres viewed from above — either pointing inwards (toe-in) or outwards (toe-out). Toe-in improves straight-line stability; toe-out improves turn-in responsiveness. Most road cars run slight toe-in; race cars often run toe-out at the front for sharper turn-in.
Caster
The angle of the steering axis when viewed from the side — how far forward or back the pivot point sits relative to the tyre contact patch. More caster increases self-centering force (straight-line stability) and camber gain in corners. It's harder to feel in sims but important for tyre wear and steering feel.
Tyre Model
The mathematical model each sim uses to calculate how tyres grip, slide, and wear. Different sims use different tyre models: ACC is known for its ACC tyre model; rFactor 2 has its own Pacejka-based model; iRacing has its proprietary model. Tyre models determine everything from braking feel to how the car behaves at the limit.
Traction Circle
A visual representation (and physics concept) of the total grip budget available at each tyre. You can use only so much grip at once — braking, cornering, and accelerating all draw from the same pool. Push beyond the traction circle's limit and you slide. Understanding this is fundamental to fast, consistent driving.
Slip Angle
The angular difference between the direction a tyre is pointing and the direction it's actually travelling. Small slip angles mean the tyre is mostly rolling; larger slip angles mean it's sliding. The moment slip angle exceeds the tyre's grip threshold, the car starts to slide. FFB wheels let you feel slip angle building — this is what "reading the car" is about.
Weight Transfer
How the car's weight shifts during braking, acceleration, and cornering. Under braking, weight shifts forward; under acceleration, it shifts rearward; in corners, it shifts to the outside wheels. Weight transfer changes tyre load and therefore grip — managing it smoothly is what smooth driving is all about.
FOV (Field of View) — Screen Setup
When referred to in screen setup, FOV is the angular width of your in-game camera view, calculated from your monitor position relative to your eyes. Set it correctly and the sim looks right — distances and speeds feel natural. Set it wrong and corners appear tighter or wider than they should, throwing off your braking points.
Telemetry
Recorded data from your driving session — brake pressure, throttle input, steering angle, tyre temperatures, sector times, and more. Most sims record telemetry automatically; tools like SimHub, iRacing's own analysis, or Moza's software let you review it after the session. Analysing telemetry is how you find where you're losing time.
Race Engineer
In real motorsport, the person who analyses data and advises the driver on setup and strategy. In sim racing, apps like Crew Chief provide AI race engineer functionality. Some sim racers also run real-world data analysis software to dig deeper into their data.
Delta (Delta Time)
The difference between your current lap time and a reference lap — usually your personal best or an ideal lap. Delta is expressed as + or -: a +0.5s delta means you're half a second slower than your reference; -0.3s means you're ahead. Chasing negative delta is what lap time improvement looks like in practice.
Competitive Racing
SA (Safety Rating)
Short for Safety Rating — iRacing's licence system that tracks clean vs incident-heavy driving. You earn SA by completing races without incidents; you lose it by causing collisions or going off track repeatedly. Higher SA unlocks access to higher-tier races. Think of it as your racing licence that you can't fail to renew.
iR (iRating)
Short for iRating — iRacing's numerical skill rating, updated after every race based on your finishing position relative to the strength of the field. Higher iR means you're racing against faster people. It's the MMR of sim racing: a 2000 iR driver and a 6000 iR driver will rarely see each other on track.
SOF (Strength of Field)
The average iRating of all drivers in a particular race. A 4500 SOF race is highly competitive; a 1200 SOF race is beginner-friendly. Knowing SOF helps you gauge what kind of pace to expect before joining a session.
Split
Which instance of a race you get assigned to, based on your iRating at sign-up time. iRacing runs multiple parallel races (splits) for the same event — the top split has the highest iRatings, the second split has the next tier, and so on. Better iRating = higher split = faster competition.
Incident Points
Demerit points assigned in iRacing for contact, cutting track limits, and other infractions. Exceed the incident limit for your licence class and you'll be suspended from official races. Incident points exist to incentivise clean racing — they're not perfect, but they're the backbone of iRacing's safety culture.
H-Pattern (Shifter)
A sequential gearbox operated with a physical shifter that moves through an H gate — 1-2-3-4-5-6 (and reverse). H-pattern shifters require a clutch pedal and rev matching (heel-toe) for smooth upshifts and downshifts. They feel more real than sequential paddles but are slower for most drivers.
Sequential / Paddle Shifter
Gearboxes operated by paddles behind the steering wheel (or a single sequential stick) — pull to upshift, push to downshift. Sequential shifters are faster than H-pattern and don't require a clutch pedal, which is why most race cars (and sim racers) use them.
Heel-Toe
The technique of blipping the throttle with your heel while braking with your toes — matching engine revs to wheel speed during a downshift so the gear engages smoothly. Heel-toe is essential with H-pattern gearboxes and takes practice to do consistently without disturbing the car's balance.
Trail Braking
The technique of continuing to brake slightly as you turn into a corner, then releasing the brake progressively as you apex. Trail braking shifts weight forward, loading the front tyres and improving turn-in grip — but carried too far it overloads the fronts and causes understeer. It's one of the core techniques for fast, consistent lap times.
Threshold Braking
The technique of braking at the absolute limit of tyre grip — as hard as possible without locking the wheels. Locked wheels mean no steering and a longer stopping distance. Threshold braking is about finding the exact pressure point where the tyre is at its maximum coefficient of friction and staying there. Load cell pedals make this technique much more repeatable.
Slipstreaming / Drafting
Following closely behind another car to take advantage of their aerodynamic slipstream — the low-pressure wake behind a moving vehicle. Sitting in the slipstream reduces your drag, letting you carry more speed down a straight. At the end of the draft, you pull out to the side and use your extra momentum to outbrake them into the corner. It's the most fundamental race craft technique in both real and sim racing.