A long time ago I actually drove on that track by accident in a completely underpowered Mini/Innocenti clubman and remember some pretty steep banked corners. ...
Here‘s one of the special corners of the Isle of Man TT course. The video shows the first lap of last year‘s “Senior TT“ at “Barregarrow“.
In case you wonder why there is so much distance between the riders, they start separately at 10 seconds intervals. Consider that they have a full tank in that video, which makes the bike significantly more difficult to handle at places like Barregarrow. … You should see them there in the 3rd or 6th lap when there is only little gas left in the tank.
James Hillier (2nd in the video, and the one this thread started with) had to resign from the race right there in that video. His bike‘s suspension was compressed so much at the bottom of Barregarrow that the engine‘s sump cracked on the tarmac. Michael Rutter (at 0:30) & David Johnson (at 1:26) got into trouble due to Hillier's oil on the road. … If you listen carefully, you can here the sound of Hillier‘s engine touching the ground. Took the marshalls a dangerously long time to realize that there was oil on the road.
At 0:39 you see Dean Harrison, who led most of the race and set a new lap record with an average speed of 134.918 mph in the first lap (from a standing start with a full tank)!
… And at 1:30 you see “Hicky“, the winner of the race, who explains the ShiftCam in the video in post 14. He set another lap record with an average speed of 135.452 mph on the last lap. He finished the 37.7 miles long lap in 16 minutes and 43 seconds. … If you‘d do a lap on that course on a regular day by car (which takes almost one and a half hours) without knowing anything about the TT, you‘d probably call that impossible. … There are a number of spots along that course where, watching the TT for the first time, you‘d probably not believe your eyes either.