Braking Distances for 'sports' cars and motorcycles
I have ridden bikes and driven cars since I was 17, I currently have 6 motorbikes and 1 car. I have been stopped for doing 101.8mph on my VFR750 on the M40 over 10 years ago and the court went to three hearings before it was settled as I defended myself until the last hearing. At that hearing I was told that I could not be a technical witness as to quote the crown prosecution I wasn't qualified to be a technical witness. Strange being qualified in Maths, stats and computing, Mechanical engineering and automotive engineering and design and being involved with nephews that went on to be British kart, Formula Ford and Australian F3 champions. My manager at the time only took me to court because he beleived me when I stated I wasn't going that fast ( Including the growth rate of my tyres at the temperatures, pressure and speed on the day of the incident) He was concerned I may get a short term ban.
They let the police go back to duty before sentencing me, I got 6 points and a £200+ fine, if I had deniedspeeding I would of been let off as at the time radar guns didn't work on bikes and they used VASCAR. However, being honest i admitted to speeding but not the speed they claimed.
OK that's my 'qualification' for commenting on this case.
172mph on a British Public road is not safe. Even if on a dual carriageway that is empty in your direction and only cars on the other carriageway at that speed if your car hits the barrier it can be thrown over the centre, plough through fences in to houses or roads off the nearside all just through getting a blow out in a tyre.
The other falicy on the comments above state that bikes can stop quicker than a car. No they can't they may have far less mass and big fat tyres and big powerful disk brakes, however, Cars have a longer wheelbase, wider track, 4 rubber contact points with the ground each having a much larger contact area than that of a sports bike and in the case of sports casrs they also have very powerful brakes.
My VFR750 is quite capable of standing on it's nose under braking with the back wheel several feet in the air it's been known to happen down the M1 due to the numpties on the road. With only one wheel on the ground and a small contact patch it doesn't stop as quickly as a car that at high speed has all 4 wheels on the ground with nice fat contact areas all doing some braking.
At low speeds the difference between cars and bikes braking is minimal, at high/racing speeds they are not, this driver was caught doing 172mph - 252.27 feet per second if he has perfect eyesight he is blessed, if he only meets the minimum required of reading a number plate at 25 yards he has covered massively more distance than he can see clearly in just his reaction time.
Get a puncture, lose a wheel weight, have warped disks because of consistent heavy braking and at the speed he was going he would hardly see anything even the end of his own nose. If his car was immaculate in it's mechanical preparation then it may be safe to go that speed (on a suitable road or track). Speed limits are there to protect road users and the public for when things go wrong or are not in perfect order, they will always err on the side of caution. I don't always stick within the limits, however, I would save such speeds for the correct environment - which isn't British public roads.
Yes this driver should receive gaol time, but that is only my opinion, the driver himself would say he doesn't as he no doubts feels he was safe. The law is there to protect you from yourself as well as other people from your actions!