Is this a loosely-based remake of "The Wild One," with Marlon Brando?
I haven't seen it, but watching the trailers, it seems to be evoking The Wild One. Austin Butler plays the Brando character, and the girl who plays the waitress, who Brando falls for, even has the same name, Kathy. Tom Hardy plays Lee Marvin's character, Chino, though he's called Johnny.
At least that's the way it looks to me.