Williams' chief technical officer Paddy Lowe claims that the biggest impact the Halo will have on the 2018 cars is its weight, rather than the aerodynamic implications. The controversial head protection device will come into effect next season.
The minimum weight limit was raised for next year as a way to accommodate the Halo, despite F1 moving to decrease the weight limit. Lowe has said that not enough people are talking about the fact that it will make the cars much heavier.
"The weight is probably the biggest thing which people aren’t talking about so much," Lowe said. "It is very heavy not just as a component but also the structure you put in to take the loads. Performance-wise it’ll be the weight which will be more significant than the aerodynamic impact which is negligible."
Lowe also believes that the heavier drivers will suffer from the introduction of the device. "The weight limit was put up but not by the amount that it has impacted so I think that’s why it’ll be a challenge to all the teams."
Bahrain International Circuit - Winter testing