i would check the brake rotors for warping if it gets worse when pressing the brakes
Tires out of balance
If your steering wheel is vibrating or jimmying while under normal driving conditions this indicates that your tire are out of balance, or have been worn incorrectly. You may have a bad alignment, bad control arm bushings, improper toe/chamber or the wrong tire compound. If your wheel vibrates while turning, then your power steering pump is failing, and needs refurbished or replaced immediately.
Tire out of balance, loose lug nuts, worn wheel bearing, or bent wheel.
check your tire balance or you might need an alignment
a rotation is where they switch your tires from front to back a tire balance is where they make sure the tire is the same weight all the way around alignment is where they make sure your steering is straight
Tire out of balance, bent wheel, or if it vibrates only when braking you have a warped rotor.
either your front end is not allighned properly. ot you have a tire out of balance..
Probably one or both of your front wheels are out of balance. Get them checked in garage or Tyre Centre.
Have the tires checked for being round. You can balance a square block but it won't roll smoothly.
If it only vibrates while moving, at any speed, it's probably a bent rim. If it only vibrates at highway speed it is a tire chrachteristic called "Radial First Harmonic" and might be improved with dynamic balancing. The tire shop needs to move weights on the rim. If it only vibrates at higher speeds, like 40 mph and above, it's probably the static balance and the tire shop needs to move weights on the rim. If it vibrates all the time, even when stopped, it's probably a four cylinder economy car and you are a cheap ass.
First check tires for tread separation, out of balance, etc. If it's vibrating, you shouldn't be driving 80 MPH. Could also be drive line out of balance, which could indicate possible U-joint failure waiting to happen.
It sounds like your tires are out of balance. I would take it to a tire shop and get them balanced. If you have a Walmart nearby, and they have a shop, it's fairly cheap there. That should be your answer.ANS2:I agree. More than likely a tire balance and rotation will solve the vibration problem. Of course, ask them to inspect the tires for any defects.