iichel wrote:Could a blown front axle reduce the amount of air passing on the inside of the wheel?
I mean, they take air from the brake duct and blow it out on the outside, effectively reducing flow between the wheel and the nose/body.
A bit, yes. Although there many factors inbetween influences that (not in the least front wing and brake duct!). However it's not as simple as "we try to reach the best optimum between air on the inside and increased blown front axle efficiency". Blown front axles require you to have built the car around it.
Furthermore, the air right on the inside of wheel is quite dirty airflow. You'd probably not so much rob airflow from under the nosecone due the Y250 vortex, but perhaps airflow that was intended to cool the brake disks, or for the radiators of the sidepods.