Well i don't know the Game my self but a few basic racing tips
when coming up to a corner break Early , and the put the power on as soon as you start to turn , come in to corners tight but Exit them wide, if you have the option , make you opponents spin out by forcing them wide (on a corner) also if your coming in to a corner wide and your opponent is coming up on the inside either get in front of him or ram him in to the wall or pillar
Never make contact with the other cars for to long it will slow you down if you do feel the need to ram them just hit and run don't try and force them off the road