The r390 road car stock cannot even be compared with the toyota gt1 road car. The gt1 has double the hp (stock) and the r390 has only about 350hp to start with.
The handling on the r390 is great if u leave it alone. And if u buy all the toys (which i strongly disagree with) ts a fast, good handling car.
But leaving it stock with nothing but some tires, u can enter the polophony cup and win with ease. The polophony cup its a long and boring series.
Tires for the polophony cup dont really matter if u've choosen the r390 road car becuase u kick their ass so bad u could probably pit 1-5 times in 1 race.