I have had mine at 160 MPH and Crumpy's Srt coupe at almost 200. too scared to look.
Based on the Speedo only.

The wing really does work on the NA and I never felt on the edge at all. 200MPH in the coupe was steady, but there I did feel a bit of my @ss over the abyss.


Brakes????????????????

Are you kidding?
Never touch the brakes at those speeds.

First, it is too dangerous and second they are not built to stop you more than once or twice from those velocities.