I have a 2003 Honda civic. PLEASE HELP!?
 

When I was driving today, I reached a speed above 80 kph. As soon as i went above, my steering wheel started to vibrate or shake. What is this? Please help!

The front wheels of your car are probably disligned or maybe there is was something rubbing.

It sounds to me like either your vehicle is out of alighment or the tortion bar AKA stabalization bar udnerneath the frame of your vehicle which helps stabalize a vehicle at high speeds may wore out or out of aighment its self hope this helped