All rims
Finish in first place in all races.
24 carat gold car with gold rims
Successfully complete the game (all six areas).
The Gov'ner
Finish in first place in all six Game Show mode episodes.
HW Prototype 12
Finish in first place in the Tiki Island episode.
Jester
Finish in at least second place in the Zero Gravity Zone episode.
MS-T Suzuka
Finish in at least second place in the Spider Alley episode.
Muscle Tone
Finish in at least second place in the Tiki Island episode.
Overbored
Finish in at least second place in the Buccaneer Bay episode.
Pony-Up
Finish in first place in the Jurassic Jam episode.
Power Pipes
Finish in at least second place in the Lava Land episod.
Rodger Dodger
Finish in first place in the Zero Gravity Zone episode.
Super Tuned
Finish in first place in the Spider Alley episode.
Switchback
Finish in first place in the Lava Land episode.
Vulture
Finish in at least second place in the Jurassic Jam episode.
Zotic
Finish in first place in the Buccaneer Bay episode.
Bonus wheel rims
Win the indicated race to unlock the corresponding wheel rims.
Wheel rim 4: Terror Saur race in the Jurassic Jam TM episode.
Wheel rim 5: Dinosaur Boneyard race in the Jurassic Jam TM episode.
Wheel rim 6: Black Widow's Nest race in the Spider Alley TM episode.
Wheel rim 7: Insect Hive race in the Spider Alley TM episode.
Wheel rim 8: Whiteskull Cliffs race in the Buccaneer's Bay TM episode.
Wheel rim 9: Monster of the Deep race in the Buccaneer's Bay TM episode.
Wheel rim 10: Jungle Snake Pit race in the Tiki Island TM episode.
Wheel rim 11: Gator Forest race in the Tiki Island TM episode.
Wheel rim 12: Solar Strip race in the Zero Gravity Zone TM episode.
Wheel rim 13: Satellite Mission race in the Zero Gravity Zone TM episode.
Wheel rim 14: Fire Mountain race in the Lava Land TM episode.
Wheel rim 15: Volcano Battle race in the Lava Land TM episode.