The Tommy Kaira ZZ-S Coupe has a soft suspension, so if your car is oversteering, try to stiffen its suspension, something near 8.0-10.0 on both front and rear.
In theory, to counter oversteer you need to soften the rear and/or stiffen the front. But since this is GT2 and with the tracks being pretty low poly, anything that works is good. 👍