The movement is with purpose so janky so that it feels more like you are actually controlling a sole tire with continuous acceleration and bouncing. Additionally it makes the movement hard but possible to master so every time you play a level you can try to improve your time and find new strategies to beat the level faster.
Here is a speedrun from me for the first level in just 6 seconds:
https://www.dropbox.com/scl/fi/j6y6kbavri7rucilt8y4k/311be37b-a03e-47fd-ae15-d42...