My car shakes/vibrates badly when getting up to high speeds. What's wrong?

Question

My '97 Mustang vibrates and shakes a lot when I'm accelerating to higher speeds. I can tell the vibration is in the middle, and not just in the front or the back. It happens mostly between 50-60 MPH, and also between 70-75 MPH.

Do I need a spin balance? Wheel alignments? Tire rotation? Please help!

Thanks in advance. :)

Answer 1

Sounds like tires. Take it to a tire place that can check if they are out of round. Speeds that you are referring to makes me think ALL the tires need checked. Get them checked.

Answer 2

tire balance or a bent drive shaft

Answer 3

well yeah it could be the tires but what about a loose strut i had that happen to me before not with a mustang but still  

Answer 4

  U- joint I believe your 97 is a rear wheel drive . Get it fixed before it flies out and causes a lot more damage.

Answer 5

Usuually its the tire balancing that does that. Get your tires balanced, its cheap, or 100% free if you bought your tires at most big tire chains. If that doesn't fix it, look into getting an alignment, which is a little more expensive $60ish, and that will usually fix the problem if the balancing did not. If you haven't done your alignment in a long time (or never had it done) it would be a good idea to just get your wheels aligned, and have the tires balanced and rotated (if needed) all in one go.  

Answer 6

could be all of the above.without actually seeing the car it would be hard to diagnose.good luck

Answer 7

its the u joint in the driveshaft. get under the car by the rear end and grab the driveshaft and see if it moves from side to side or up and down. if it does its a bad u joint and u need to replace it asap.

Answer 8

your tires... or one tire, for that is all it takes... could be off balance... or as is the case with my car... you could have a bent rim... even ever so slightly it will make your car shake. mine was on the front and i moved it to the back and now my car hardly ever shakes unless i hit like over 80... but i would suggest replacing the rim if you can afford it, or moving it to the back for a temporary fix until you can get a new one. some people drive on dirt roads... and if you do it when it rains... and then the car sits over night, mud can pack into the back side of the rim and cause the same effect. but of course this would only be a problem for somebody that drives dirt/gravel roads. hope this helps

Answer 9

I would say tires need checked, and do a test on your alingment.... find a flat area to drive to do the test,      You can let go of the wheel and apply your brakes (at low speed, controled area)   if it pulls to either side your alingment may be out....  and if it's bad it should be pulling all the time while driving.

Think back to when it started, and what took place before this.