In 22 the disc is well away from the wheel, also the drum is larger. This is because all braking air in & out must exit via the inside of the wheel. Hot air out must go through the rear facing side of the scoop. This will reduce heat transfer into the wheel & is far less tunable pic.twitter.com/MIw8Iuk5OX

— Craig Scarborough (@ScarbsTech) February 7, 2022