You can use library sounds. But what's the fun in that?

Tasked with sound designing a spec advertisment for Harley Davidson, I knew real riders know the sounds of their bikes. That's why we recorded it all-- revs, brake runs, accelerations, and everything in between. 

It wouldn't be true to the project to use sounds from libraries. We used full authentic motorcycle recordings, as well as samples of wind and road noise captured in motion, on the ground, and in the air.