Mercedes boss Toto Wolff says the Monaco Grand Prix pit stop that put Valtteri Bottas out of the race will be investigated in granular detail – as will the design and material of the troublesome wheel nut itself – as the team try to ensure the problem can never happen again. An issue with Mercedes’ wheel gun left the right front wheel nut and the wheel stuck on the car when the Finn pitted on Lap 30, forcing him to retire from what was second position. It left Mercedes without a podium in Monaco and saw them lose the championship lead for the first time since 2018. Bottas said he’d never experienced anything like it during a Grand Prix, and Mercedes Technical Director James Allison said it left the crew feeling “lower than a snake’s belly”.