The two most likely reasons for this is either bad shocks or low tire pressure.
why does my car shake when i go over 70 mph?
answer
most likely, the wheels are out of balance, which is relatively easy to fix. here's how you check if your wheels are out of balance in just two minutes! and if they are out of balance, here's an article about how to save money on flipping them back in place.
why does my car shake when i go over 75 mph?
if your car shakes when you go over 75 mph the problem could be the front end suspension. this happens because there is too much pressure on the top of the springs (where they attach to the car) and not enough at the bottom. the shaking should decrease or stop completely if this was where you needed to focus attention. this article explains how cars shake due to front-end issues in more detail. https://www.ehowzitcareblogzshaken-car-frontend-issues#articlesection5
what causes a car to shake while driving at high speed?
this phenomenon is caused mainly by high frequency, low amplitude divergent motions of vehicle springs and linkages.
the shaking can also be corrected with weight adjustment. installing heavy items in the trunk will cause the car to stabilize more quickly than if it were empty.
what causes a car to shake while driving at high speed?
this phenomenon is caused mainly by high frequency, low amplitude divergent motions of vehicle springs and linkages. the shaking can also be corrected with weight adjustment. installing heavy items in the trunk will cause the car to stabilize more quickly than if it were empty.
if you make sure that all tires are inflated equally, inspect for an alignment fault or worn shocks, then your suspension should last much
what does it mean if my car shakes when i go over 60?
if the shaking is moderate, you could have a problem with your tires or axles. it could be as simple as pressure imbalance. but if the shaking is severe, it's possible that your car needs an alignment or other more serious repairs.
