A Dorset knob being a crumbly sweet biscuit that's as hard as stale bread - named after the 'Dorset knob button,' which were buttons made out of yarn in the 17th, 18th and 19th centuries ... knob ...
Does the new M5 - all 5.1m and 2500kg of it - manage to shrink around you and disguise its weight? Incredibly, the answer is yes, yes it does. Some excellent tuning and specific technologies help ...