For this achievement you must earn the Platinum medal in the Bobsleigh challenge, which is the DC Challenge in the 3rd season during the Winter X-Games.
-Make sure to break before you turn, not as you turn.
-After the first hairpin, try keeping the accelerator down all the way to the bottom of the hill.
-Only use your E-Brake once, during the very tight hairpin mid-way through the track.
-Try following the racing line in the video
Tune your car to your preference. The following is my fastest set-up for 56.264 time:
Gear Ratio: [X] [ ] [ ] [ ] [ ]
Downforce: [ ] [X] [ ] [ ] [ ]
Suspension: [ ] [ ] [X] [ ] [ ]
Ride Height: [ ] [X] [ ] [ ] [ ]
Differential: [ ] [ ] [ ] [ ] [X]
Brake Bias: [ ] [ ] [ ] [X] [ ]
Here is a video on how to complete it with a fast time and includes tips and tricks.