when you first start the race crash the other racers into the wall to damage them and get passed them,or you can hit the back side of the opponents car to make him spin and get passed them.When your turning stay close to the curb (the side of the turn).Make sure to use your nitro and DO NOT turn when your nitrous is on most importantly NOT on a sharp turn cause you WILL crash.I hope these tips helped you win your races if they dont just let me know and i will fix the tips and put better ones.