I'm sorry, but i have to disagree with the other comments.
A blow-out on a motorcycle is going to be messy, unfortunatley, regardless of whether the rider's travelling at 70mph or double that. The real point here is that these speed limits were set over 30 years ago, at a time when the majority of vehicles were fitted with drum brakes and poor quality tyres. Modern vehicles, ESPECIALLY MOTORCYCLES, can safely come to a standstill within half the Highway Code's suggested braking distances. The machines themselves are ultra-reliable, the compounds used in modern tyres are superior to those used in Grand Prix cars of the time the speed limits were set, and modern disc brakes and pads can bring a machine to a halt with incredible efficiency, even in adverse weather conditions.
Understand, I by no means condone reckless driving. In fact, as a motorcyclist myself I'm constantly irritated by other riders giving us all a bad name. I ride for enjoyment, not as my primary mode of transport, and I admit to exceeding the speed limits on a regular basis, but I only ever do so in appropriate places. As with the majority of other bikers, I would never exceed the speed limit within a built-up area, near a school, where the traffic is heavy, or when the general road conditions are poor. This is why i truly believe that the time, place, and conditions in which a motorist is caught speeding should be taken into account when judgement is passed.
Surely nobody out there can honestly tell me that a motorist, in control of a vehicle that is purpose-built for performance and properly maintained, travelling at 100mph on an empty stretch of motorway, in fine weather conditions, at an off-peak time, is comparable to somebody driving at 50-60mph in a built-up area with traffic and pedestrians at close quarter?
One is speeding, i grant you....but the other is speeding, driving recklessly, and without due care and attention in a populated area. Surely the punishment