iRacing Wheel LFE Explained: What Each Effect Does and How to Tune It

Wheel LFE is iRacing's system for playing its low frequency effects, the tactile cues normally sent to a bass shaker, through the wheelbase motor itself. It runs in parallel with ordinary force feedback rather than replacing it, which is why a wheel can suddenly carry detail it never carried before.

It is not something anyone has to buy. Wheel LFE and the 360 Hz mode run on every wheelbase MOZA makes, the entry-level MOZA R3 and the flagship R25 Ultra alike, and both arrive with a software update rather than a new purchase.

Where Wheel LFE came from

The acronym stands for low frequency effects. In sim racing it has meant something specific for years: a low frequency signal synthesised from the sim's own physics and sent to a bass shaker, the tactile transducer bolted to a seat or rig frame, translating slip and impacts into something felt through the body rather than through the controls.

Wheel LFE builds that same family of effects from the car physics and plays them through the wheelbase motor instead, so the rim takes the shaker's place.

Reproducing it asks for a motor that can add small, fast modulations on top of the steering torque it is already holding. How cleanly those modulations read depends on how smooth that motor is underneath them, which is where the very low cogging design of a base like the MOZA R16 Ultra helps.

The controls sit in iRacing under Options, in the Misc tab, where the effect is switched on, given its overall level, and told to build its vibrations from the physics rather than from game audio. Turning it on is a question of software versions rather than model: MOZA's Pit House needs to be on 1.3.1.50 or later and the base on firmware 1.2.5.5 or later, after which both this effect system and the 360 Hz mode arrived together, with iRacing's 2025 Season 3 build.

LFE is not force feedback, it is a sensation layer

Normal force feedback is a computation of the forces acting on the steering system: the self-aligning torque, the trail geometry that generates it, and the load state at the front axle. When the front tyres start to slide, the aligning torque falls away and the wheel goes light. That is the state of the steering itself, arriving through the channel the hands already read.

LFE carries something else. Its channels are driven by engine speed, slip ratio, surface type and chassis acceleration. In a real car those cues reach the driver mostly through the seat, the pedals and the floorpan, far more than up the steering…