: Improvements to the aero kit provide increased downforce at mid-to-high speeds. The drivetrain features a fixed differential lock and more realistic gear ratios.

While "HNR Edition" is specific to the gaming mod, BMW has released several real-world limited editions of the M4 CS and Competition models: Track Day!! BMW M4 CS HNR Edition by ATAMER so so too so hmm hmm so um so so um so you. YouTube·Vapod BMW M4 CS - HRE Classic 300 + H&R + Remus - Bimmerpost

This mod, particularly in its , includes several technical refinements to provide a more realistic and competitive driving experience within the game: