I still think guys like you miss the point.
1/1 D1GP goes around 170~190KM/H max, in very, very fast combo's.
If i drift on the carpet at the club i'm in, in wide corners i'm going to my mere estimate around 17 to 20 KM/H, wich is the speed cars drift at. Realisticly seen as speed should be divided by 10 for tenth scale.
At that speed a grip racer with stock motor goes a tiny bit faster trough those corners.
It's not about going 30+ in RC-Drift but about beating other guys using the same drift tires.
This is ofcourse only my opinion, you may not agree.