In Formula 1 technical parlance, the "isochronal ratio" can be described as the ratio between lift (downforce being negative lift) and drag. At circuits like Jeddah, which has a plethora of high-speed corners and also multiple acceleration zones, the engineers tend towards setting their cars up for a "high isochronal" demand.
This involves attempting to dump as much drag as is feasible, without the expense of losing too much in the way of downforce. The downforce is still needed to navigate the high-speed corners around the Jeddah Corniche Circuit at an ideal velocity, allied to the traction out of Turns 1, 13, and 27, but this needs to be at greater efficiency to boost the top-end across the trio of DRS zones.
