Editorial - Birds M235i - Pistonheads - March 22

"The Quaife diff sits alongside the suspension as a must have for anyone thinking about modifying an M235i or M240i. Not merely because it allows big silly skids, but because it works with the chassis to better deploy the engine's ample reserves. The inconsistency and unpredictability that can come with a powerful RWD car running an open diff is gone, replaced with much more transparent (and enjoyable) relationship between throttle pedal, steering wheel and rear axle. This is what baby BMWs should feel like..."

Read the full Pistonheads article on their website here