Until recently, the Guinness World Record for the fastest speed by a vehicle indoors stood at 86 mph. That was until Leh Keen’s Porsche Taycan Turbo S was clocked by independent adjudicators at 102.6 mph inside the New Orleans Convention Center. Keen’s all-electric Taycan Turbo S has a maximum of 750 hp, with four-wheel drive to maximize grip, powerful carbon ceramic brakes and the ability to accelerate to 60 mph from a standstill in just 2.6 seconds. And what’s more the record was set on the Taycan’s standard fitment original equipment (OE) tyres. But what tyres were they?