Quick release (QR)
Sim Racing
The coupling that lets you pull a steering wheel rim off the wheelbase in seconds, so you can swap between, say, a formula-style and a GT-style rim without tools. The catch is that QR systems are largely brand-specific (for example Fanatec and MOZA each use their own designs), so a rim and base generally have to share the same quick release — or use an adapter — to fit and pass through buttons and force feedback. Concrete example: a rim built for one brand's QR won't simply click onto another brand's base. Buying impact: before buying a rim separately from the base, confirm the QR matches or that a reliable adapter exists, because a mismatch is one of the most common compatibility mistakes in sim racing.