Tour Magazine in Germany does a wet grip test for a 8m radius corner. Depending on the tire, I think max speed can vary by 6km per hour for slip.
There are too many variables to give you a number. The static friction of the contact patch will vary on temperature, weight of rider plus tire pressure will change size of contact patch etc etc etc....
The page two in the PDF shows the contraption used to test friction and the poor rider dressed as a crash test dummy.
Wheelworks Handcrafted Wheels
every thing shows it is 100% faked
The rock star is dying. And it's a small tragedy. Rock stars have blogs now. I have no use for that kind of rock star.
The usual Facebook page
Darrell Llewellyn McCulloch
I always thought this photo of Jobst Brandt showed a realistic/safe max lean angle:
This is a screen cap so the quality sucks but here's Sagan diving for a corner
Also, at that lean angle you wouldn't be turning the pedals or you'd hit the ground with the inside pedal. Your outside foot would be pushing down hard. In the photo the crank is not at the bottom of the rotation but at about 4 o'clock. That's because he is stationary. You can see the wheel spokes because the tires are not turning. I call fake. This guy needs to watch some youtube videos to see how it's done. What an ass.
The down hills around here can get me going over forty miles per hour. On the straights I hang tough and ride it out. When the curves come I scrub speed and grab brake though.
Body parts start coming off in a spill at those speeds.
I'll never wear those rubber knubs off of the side of my tires!
I always liked this video of Cancellara descending that Red Kite Prayer keeps up on their main page.
Pretty good lean angles, fast and smooth:
Cancellara on the Drop | RKP