CTA is a 2D program so you must provide an image for any angle you want to present an object at.
So for turning a motorcycle (I assume from a side view to a front or end view or visa versa) you need an image of the motorcycle for each angle you want.
If you want a smooth turn then you need several angles in-between so that means an image for each angle.
You can build a prop with multiple images so that using the sprite editor you can change the image of that prop at different key frames.
Keep in mind that the character only turns by 45 degree increments.
See my CTA Tutorials on the YouTube channel CTAStepByStep
Check out EZColors for CTA. The easy way to change Render Styled (RS) colors.