My car problem?

Question

I dont know why when I drive over 75MPH, my car starts shaking. Does anyone know what the problem is before I go to the car service?

Thanks!

I just changed my breaks, routers, and tires a while ago..

Answer 1

Have all front suspension parts checked. Ball joints, tie-rod ends, idler arm, cross link etc. Have your tires and wheels balanced on a Hunter Force Wheel Balancer. It's by far the most complete machine on the market.
Go to Hunter Wheel Balancers on the net to find a service shop in your area who has this machine.

Answer 2

This is not an easy problem. Usually, when there's any kind of imbalance or out-of-roundness in the unsprung part of a car (like a tire), the shaking will be worst at about 45 to 55 mph, but at 75 it smooths out some. So it's unusual. It may still be a tire, but I'd check for looseness through the whole suspension. I think you'll find something with a bushing in it worn out.

Answer 3

Could be one of a few things:

1. Your tires need balancing
2. Your front end is out of alignment
3. Your ball joints could be worn out and "sloppy" and need replaced

The first thing I would do is to have your tires balanced. This is the cheapest thing to do to start with trying to pin-point the problem. In the meantime, have the mechanic visually and manually check for worn-out tie-rods and ball joints, and even bearings. When the car is up in the air, place one hand on TOP of the tire, and one hand underneath, and try to rock the tire back and forth. If tou can feel it (and sometimes see it) have alot of play and movement, then chances are you might be spending some money to have it fixed.

Answer 4

Most likely due to a bad wheel, but could also be weakening suspension or something such as tie rods.

Again, there is no main problem that will give these symptoms.
My truck shakes when I hit 75 also, but I know I need new tires, and as the truck is 21 years old, I am sure it needs new tie rods, ball joints, AND shocks...O well such is life...

Answer 5

Tires out of balance,wheel bearings,bad shocks/struts,out of alignment,bent or damager frame,or suspension parts (control arms, ball joints,tie rod ends) It "could" be any number of things. Please don't drive that fast until you have the problem diagnosed,and repaired. GOOD LUCK! Rob in PA.

Answer 6

any noises? could be your tires, could be a faulty wheel hub, there's no COMMON cause for high speed shaking. take it to the shop and describe exactly what happens.