Indy cars IIRC have run into the problem on banked tracks. They did something to slow the cars down and remove the need for G-suits. Indy cars got to around 5

Indy cars IIRC have run into the problem on banked tracks. They did something to slow the cars down and remove the need for G-suits. Indy cars got to around 5G, which is pretty hard to sustain without a G-suit. The 9G stuff in the F-16/F-22 absolutely requires the G-suit and the reclined seat which changes the force vector. I've motorcycled on a NASCAR track, but not a very steeply banked one relative to the superspeedways. Even the lower banking changes the way turns feel in a very dramatic way though.