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If your tires go away after only one lap, your starting pressures were likely way too high. Depending on how hard the driver pushes, PS4s on a car of this type will gain anywhere from 4 to 9-10 psi in a 30-minute track session. PS4s (and other similar tires) are best when hot pressures are in the high 30s. So, if you are not already doing it, I suggest the following: start the day with pressures around 30 psi. Measure pressures in each tire immediately after coming off track (i.e., before even taking the helmet off), bleed each down to the target pressure. Rinse, repeat. Different tracks stress different tires, so you will get a feel for what cold pressure at each corner you should use at the start of a day.
Finally, turning off stability control is tempting, but very much not recommended until reaching fairly expert level. Enjoy and be careful.
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