Sim Racing Glossary
The terms that show up on every product page, explained in plain English — from direct drive and force feedback to newton-meters and load cell brakes. Reviewed October 15, 2026.
Belt-driven wheel base
A wheel base that transfers motor force to the wheel through rubber belts. Belt bases were the mainstream before direct drive took over: they are smooth but absorb fine detail, and belts wear out over time. Today they mostly survive in budget and older wheels.
Brushless motor
The motor type used in every modern wheel base. Without physical brushes there is no wear part, so direct drive bases run quietly and maintenance-free for years.
Clipping (force feedback)
When the requested force exceeds what the motor can deliver, the signal is clipped flat and you lose all detail at the peaks — kerbs, slides and curbs all feel the same. The fix is lowering in-game force feedback strength or moving to a base with more torque.
Direct drive (DD)
A wheel base where the steering wheel mounts directly onto the motor shaft with no belts or gears in between. Direct drive delivers the strongest, most detailed force feedback with zero maintenance, and is the standard for new sim racing hardware in 2026.
Ecosystem (closed vs open)
The wheels, pedals, shifters and accessories a brand supports on its bases. Fanatec runs a large closed ecosystem where everything fits its own quick release; Logitech supports only its own wheels. Your ecosystem choice locks you in more than the base itself.
Force feedback (FFB)
The motor forces that recreate what the car is doing: front tyres losing grip, kerb strikes, weight transfer and traction loss. Stronger is not automatically better — clarity and detail at low force matter as much as peak torque.
Gear-driven wheel base
The oldest drive type: a small motor turns gears that rotate the wheel. Cheap but notchy, noisy and full of mechanical slack. Gear-driven wheels still appear in entry-level products but are obsolete for serious sim racing.
Load cell pedal
A pedal that measures how hard you press (force) instead of how far it moves (position). Braking by muscle memory rather than travel is faster and more consistent, which makes load cell brakes the minimum worthwhile upgrade for sim racing.
Newton-meter (Nm)
The unit of torque a wheel base delivers. 5 Nm is enough to start, 8 Nm is the recommended sweet spot, 12–15 Nm handles heavy GT wheels with headroom, and 20+ Nm is flagship territory. Model names usually state it — "ClubSport DD (15 Nm)" means 15 newton-meters.
Platform (PC / PlayStation / Xbox)
The system your wheel officially works on. PC is the most flexible; consoles require specific licensing, so an Xbox wheel may not work on a PlayStation and vice versa. Some brands sell separate console versions of the same base.
Potentiometer pedal
A pedal that reports position through a rotating electrical sensor. It is cheap and fine for throttle and clutch, but inconsistent for braking — which is why load cell brakes are the standard upgrade.
Quick release (QR1 / QR2)
The mechanism that lets you snap a steering wheel onto the base and remove it in seconds. Fanatec’s QR1 is the older generation and QR2 the current one; other brands use incompatible proprietary designs, so wheels do not cross between ecosystems.
Rig (sim racing cockpit)
The frame you bolt the wheel base, pedals and seat to. A rig removes flex, lets you mount pedals at the right angle and turns a desk setup into a stable platform. Most drivers start with the chassis and add the seat later.
Table clamp
A bracket that fixes the wheel base to a desk without drilling. Convenient, but a clamp flexes under strong force feedback — above roughly 8 Nm, bolting the base to a proper rig is the better path.
Wheel base
The unit containing the motor and electronics that your steering wheel attaches to. It is the heart of a sim racing setup: the wheel and pedals are accessories, the base defines how the car feels.
Wheel deck
The adjustable plate on a rig that the wheel base bolts to. A stiff wheel deck matters: flex in the mount eats force feedback detail before it ever reaches your hands.
Keep exploring: Best wheel bases 2026 · CSL DD vs ClubSport DD · All products