Sim Racing
Quick release (QR)
A coupling that lets you pull a wheel rim off the base tool-free, but it must match the brand.
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.
What it means when you're buying
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.