He doubts the season-opening Australian Grand Prix will show true form "as it throws up some strange results".

"It'll be more when we get to China and Bahrain before we see the true performance of the cars," Hembery said.

The 2017 tyres will have very low degradation, with Hembery expecting the rubber to have 25% more grip and there to be "fewer tyre changes" during races.

"The problem we have got is that we have been testing with cars that are five seconds slower than what we're actually going to see in Barcelona," he said.

"From a compounding aspect, it is a bit of a challenge for us because it's a very small window we're working with."If the numbers aren't what we have been told they are going to be, then we might have been a bit too conservative."

We're working on ongoing development [of wet tyres] during the season, which is something we're allowed to do this season as before we weren't allowed to test," he said.

"In the last three years, I think we had three days of testing.

"Now we have up to 25 car days in a season, so we have a programme to change the wet tyres during the season.

"We want to improve the warm-up characteristics.

The Haas F1 team could become 100% American next year, in 2018, thanks to the arrival of an Acura engine, according to the latest rumors.

It would in fact be the Honda engine rebadged Acura, the luxury brand of the Japanese manufacturer in the United States.

Thanks to this subtlety, Haas could communicate on a 100% American project in its market. This association would have the support of Liberty Media, which seeks to advance the Formula 1 audience in the country of Uncle Sam.

It remains to be seen if Haas could still benefit from a technical partnership with McLaren, from the level of the one she has today with Ferrari.

As a result Sauber could keep the Ferrari engine or, more likely, turn to Mercedes if the Manor team fails to be rescued.