might not help but here goes. i was testing wings on road. here is the way i did it. i would drive in a straight line then do a sharp turn. then try it faster and faster until the wing had no effect. so i would change the angle. but when proper racing you will need to have a good balance between corning and the straights. but that all depends on the track. you could fit a larger wing then do speed runs in a short area to see how much speed is lost if any with different wings