Alonso unhappy with 'one factor' affecting Aston Martin

Fernando Alonso is unhappy with the mid-season change in Formula 1's tyre construction by Pirelli.

The new construction was introduced at the British Grand Prix to address safety concerns at high speed circuits, with the current generation of cars already reaching their downforce levels that was predicted at the end of the season.

The Spaniard believes the change has impacted Aston Martin and Red Bull the most since they were introduced by the tyre-maker, calling it "abnormal" when referring to the current competitive order.

It is not the first time mid-season changes have affected teams, notably last year when the FIA issued a technical directive to help reduce porpoising which had affected teams in the first part of the season.

Alonso discussed his stance on rule changes halfway through a season when speaking to media, including RacingNews365: "I'm not a fan of changing the rules in the middle of a championship.

"In sport, you know, you change the balls in the middle of the tennis tournament or something like that, and it’s what happens when we change tyres here, we change the rules in the middle of a F1 World Championship.

"But you know, at the end of the day, is the same for everybody again, so we just need to understand the tyre the best we can, and hopefully extract the maximum."

Aston needs more races to understand tyre impact

So far the new construction has worked well for Pirelli, as it has not suffered any structural failures at high speed circuits with the increased in downforce levels.

Alonso believes Aston Martin will need to analyse the true impact of the change, before drawing to any concrete conclusions over whether it has slowed them down.

He added: "We're still not 100 per cent sure. We need couple of races to confirm anything. So far, they look very similar but we need to wait and see."