GT4
McLaren 570S GT4
Braking numbers for the McLaren 570S GT4 in iRacing, worked out from its grip estimate. Open any example in the Brake Planner to change the speed or corner.
Example braking zones
Fastest apex speed for each corner and the braking it takes to get there, assuming a corner arc of 100 m.
| Corner | Entry | Apex | Brake before apex | Time | ABS at 100% |
|---|---|---|---|---|---|
| Fast sweeper | 220 km/h | 157 km/h | 70 m | 1.37 s | after 23 m |
| Medium 90° corner | 200 km/h | 108 km/h | 83 m | 2.03 s | after 24 m |
| Hairpin after a long straight | 240 km/h | 80 km/h | 140 m | 3.36 s | after 24 m |
How to brake in the McLaren 570S GT4
GT4 cars are heavy for their grip and carry only a little downforce, so the pedal you need barely changes through a straight-line stop. Most of the work is one firm hit at the brake point and a smooth release as you turn in.
ABS catches mistakes, which tempts drivers to stand on the pedal. Riding the ABS stops the car later than braking just under it, and it pushes the front wide on turn-in.
- Hit full pressure in the first tenth of a second; a slow squeeze wastes metres.
- Start releasing as you start steering, not before.
- If the ABS light flickers early in the zone, you are over the limit before the corner has even started.
In a 90° corner at 200 km/h this means braking about 83 m before the apex and trailing the pedal down to 14% by the apex.