Though it has a lot underrated reviews, it is not bad at all. This is, in fact, is the possible best Sonic racing game!
The Bads: Despite having two stories, Story mode itself really sucks. Could've had better graphics. Air Pit design just totally destroys the game's sense of speed.
The world of Sonic games has always been known as a Platformer and an occasional Racer as both genres very well define the amazing abilities of Sonic and his lovable pals. Sonic Riders is definitely no exception!
There's not much to say at this point. To pack things up, final words to say would be: You should really try to dig in deeper before passing a real suckish judgement to a game, as well as for everything else for this side of the universe!