how can i rotate a wheel in terms of rpm’s or do i need a python script?
I want to know that too… I hope developer see this post… 
@Both of you: No, you need no script nor a dev. You’re supposed to master multiplications and divisions at you age. 
((RPM / 60) / FPS) * 360 * number of frames
RPM / 60 to convert the RPM in rounds per second. Divided by the FPS of the video to convert into rounds per frame. Multiplied by 360 to convert in degree. The number of frames is of course the duration in frames of the animation.
For example, 300 RPM at 25 FPS from frame 1 to 250 (That’s 249 frames!):
((300/60)/25)360249.
You don’t even need a calculator, just enter the whole formula inside the text field and Blender will do the math.
Don’t ask me how to do if the rotation isn’t zero at the start of the animation or I send you in detention! :mad:
And no, I’m not a math teacher IRL, I’m just a cat. 