This may sound a stupid question but is anyone else having an issue getting to 155.3 in the mission challenge. Tried every possible scenario to do this. #HELP
Just get your TCS as low as possible, do not turn your wheel to much on the curves - so keep a straight line as possible, slipstreaming is crucial for this challenge and you will get it done.
I remember, i tried it a couple of times but at the end i did it.