Why Bugatti only broke 300mph in one direction

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Written by Charlie Turner
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The world of the speed record is not a level playing field. In fact, creating the car capable of breaking the barrier is merely half the battle. As soon as Bugatti announced the fact that it had broken 300mph yesterday, it was inevitable the internet would light up and be happy to point out that due to the rules", it"s not actually a record. To be clear, the rules for setting a speed record according to Guinness are as follows. The car must achieve the speed in two directions on the same road within 60 minutes, with the average of the two speeds the result. As you probably know by now, the Chiron only ran the speed in one direction. Bugatti says the main reason for this is that, after decades of cars pounding over Ehra-Lessien"s surface in the clockwise direction, the tarmac structure has rolled that way. Run it in the opposite direction, and you"re working against the grain, causing huge heat build up in the tyres (which ends badly). A two-lane highway doesn"t have this issue. But it also has no safety barriers, which presents another challenge.

Date written: 3 Sep 2019

More of this article on the Top gear website

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