fertsh.blogg.se - Assetto corsa competizione car setup

These factors are why the above tyre pressure tuning strategy is a good one to use - when the tyre has had time to heat up to its optimum temperature, it will give a more accurate "hot" pressure reading. If this happens, take it easy for a few corners until the temperatures and pressures have lowered again. This is why tyres suddenly begin to pressurise quickly after a spin, lock-up, or in a particularly heavy braking zone. Since physics dictates that hot air rises, the high-pressure air will slowly rise to the top of the tyre core - pressurising and warming the tyre as it does so. As the tyre surface heats up due to cornering load, the air closest to the surface of the tyre heats up. Tyre temperature and tyre pressure are intrinsically linked. Note how the air is still hot away from the surface, increasing tyre pressure. Tyres at optimum temperature, tyres after a spin, tyres after surface cools.

These readings are taken from the air in the tyre core, and don't represent tyre surface temperature. Numerical temperature values can be found either in the cockpit display (depending on vehicle) or in the setup menu. The colour range for tyre app temperature visualisation is as follows: Temperature is denoted by the colour of each tyre segment. The tire app also gives a visual representation of which tyre set you are presently using (useful when these are restricted over a race weekend) as well as the three temperature "zones" of each tyre (O-M-I or I-M-O). When the temperature increases, decrease the pressure, and vice versa. 08 psi for every 1C air temperature change.

To adjust for changing track temperatures, remember the following ratio.

For all car classes, wet tyre pressures between 30.0 and 31.0 PSI are optimal (with Pirelli's WH compound tyre).

The optimum tyre pressure range for Group GT4 cars is between 26.8 and 27.4 PSI are optimal (with Pirelli's DHA compound tyre).

This compound has better grip outside the optimal temperature range, but less grip within it, and is more prone to temperature change under load.

On 2018-2019 tracks, the optimum pressure range is between 27.0 and 28.0 psi (with Pirelli's DHD2 compound tyre, as used on 2018-19 tracks.).

The optimum tyre pressure range for Group GT3 cars is between 27.3 and 27.9 psi (with Pirelli's DHE compound, as used on 2020 tracks).

Increasing the values in the tire setup menu may help to compensate for this.

Default setups, and thus default starting tyre pressures, usually return lower-than-optimum tyre pressure values after the tyres have warmed.

Remember the following when changing pressure settings: These laps do not necessarily need to be fast, but should be consistent and repeatable.

Both of these scenarios will result in loss of overall grip.Ī good strategy for tuning tyre pressures is to drive 5-10 laps, and watch the tire pressures at the end of the longest straight (usually at the start/finish line).

If the centre segment of a tyre is longer than the other two segments, the tyre is overinflated.

If the centre segment of a tyre is shorter than the other two segments, the tyre is underinflated.

A visual representation of tyre inflation is given by the height of the middle segment of a given tyre. Real-time pressure values are displayed in the tire app. ACC uses pounds per square inch (psi) to measure tyre pressures.

Tyre pressures are one of the most vital components of a setup, and can make a big difference to tyre life and lap times. Tyre pressure and temperature are one of the most important parts of a setup.