#1 - Would have nailed it for me if the background had been thrown out off focus a little more. The shot gives a greater sense of the angle the bike is leaning on, the roost being generated, & the direction he's heading.
First one gets my vote.
I generally prefer landscape, and the 2nd one is far too tight, but that's my personal preference.
However, the first pic gives a better sense of speed and movement because you can see where the bike is coming from and where it's going, and is closer to the rule of thirds.
Only way I'd have voted for the 2nd is if it was a tight crop on the look of the rider.
The 1st one does it for me with the area to the left for the driver to be going into...Also, I always like to see the drivers face and eyes on shots like this, show how intense they are...looks like he's not slipping the clutch in the berms..how long has he been driving????
Exposure and fucus right on