Two-time Formula E champion Vergne, who will make his 100th race start in the category this weekend at the Diriyah round, has been a frequent critic of the all-weather tyre construction used in the electric championship.
Hankook took over from Michelin for the Gen3 era of Formula E, and has produced a harder tyre which has proven tricky for the teams' tyre engineers to find the sweet spot of performance in.
