During testing at Ehra-Lessien, where the Chiron Super Sport set its 304.8mph record, a repaved section presented an unforeseen challenge. At around 270mph, an unexpected "jump" occurred. It was initially overlooked by engineers, but Wallace's keen experience brought this crucial detail to attention.
At 304mph, the tires endure forces equivalent to 7,000kg. The wheels' high RPMs lock the front steering geometry, creating challenging handling characteristics similar to those experienced by aircraft at such speeds.
The Super Sport 300+ Prototype wasn't your typical Chiron. It had a 250mm longer body and a lower ride height for enhanced aerodynamics. To further reduce drag, a static rear wing replaced the traditional one.
Straying from Guinness rules, the record run was performed in one direction only. Bugatti opted for this method due to the clockwise-worn tarmac, which could have led to excessive heat build-up in tires if driven the opposite way.
Achieving perfect balance is essential. Excessive downforce causes unnecessary drag and heat. The trick lies in balancing lift and negative lift, minimizing tire load and heat, thereby reducing crash risks.
Andy Wallace's record-breaking drive in a Bugatti Chiron Super Sport is more than just a display of speed; it's a demonstration of mastering the intricacies of balance, aerodynamics, and precise engineering. With foresight and expertise, even the unimaginable goal of 300mph becomes feasible.
