Several Formula 1 drivers complained about increased bouncing during the first practice session on Friday ahead of the Spanish Grand Prix.
The return of ground-effect aerodynamics in the sport last year brought with it the 'porpoising' phenomenon which caused much more disruption than expected. Some teams got on top of it quickly, while others spent the first few months of the year compromised by the problem.
Mercedes were among the worst affected and those images of Lewis Hamilton holding his back in agony after a rough ride in Baku remain enduring. Fortunately for him, it was less of a factor in the second half of the year after the FIA got involved with a technical directive.
