Board Thread:Game Discussion/@comment-39627390-20191106012815/@comment-38476662-20191109161158

The short answer is ultimately the game takes up the space it takes up. Any data you get back by clearing will eventually need to be downloaded again to enter series and view or use cars as you go, or by downloading all assets from the settings menu at once. Basically the same as when you open the game after an update or reinstall.