These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The 3DO installment (and by extension the Sega Saturn and PlayStation versions) probably hits on the Grand Theft Auto Effect due to its inclusion of some great alternative rock songs from bands like Soundgarden and Swervedriver.
Goddamn Bats: Pretty much anything else in the road besides you and the other racers. Whether it be a sign, an oncoming car, a cow... or a bit of cow MANURE which causes you to spin out.
Porting Disaster: The PSP compilation game EA Replay included ports of Road Rash 1, 2 and 3, but in each game, the soundtrack was replaced with one endlessly looping song.