Yup...gotta keep 2 wheels inside the white lines, especially on corner exit.
Some apex curbs you can cut pretty aggressive, like through sector 1 at COTA...you can go 4 wheels over the white, but just barely, and only for a split second. Exit curbs though, Race Director ain't messing around.
Every time I see that little yellow icon pop up telling the director has discounted the lap, I think, "🤬 off Charlie!!"