Road Rash was a really fun game, for me as a kid was incredible to see a guys racing on bikes in absurdly high speeds while punching and kicking each other, even using weapons some times. I had so many laughs playing it, and it was one of the first games I've ever done everything that was possible on a "playthrough". It had a really nice system, you could buy better bikes and the game became even faster, but also harder, as in most racing games.
It's even hard to call Road Rash a proper racing game, it's kind of in its own genre. A very unique game, especially at the time it came out.