I have a 06 Civic with 50k. When I drive 60 and over the steering wheel starts to shake. Sometimes it worse than others. Any ideas what would cause this? The car drives straight and feels pretty well aligned.

 

Get your tires rotated and balanced if you haven't done so in a while. It will settle out the shaking at high speeds. It's normal with all cars.

 

do you have Steel rims or Alloys?

If you have steel wheels you could have a bent rim. Either way go get an alignment done, it will tell you exactly what the problem is.

 

A bent wheel shouldn't matter considering he didn't tell us that he hit anything, or ran over a pothole. If he did hit something, and didn't tell us, then that's his problem. Either way, wheel weights occasionally fall off over time, thus creating a sudden vibration at highway speeds. Alignments don't help with rotating balance.

 

dito.... just get tires balanced and you should be fine... typical issue with a vibration only at a certain 5-10mph range. but ask the tire guys if a wheel was unbalanced... if not then it might be your alignment.

 

-get tires balanced
-check for bent rims

 

A vehicles' wheel alignment DOES NOT CAUSE VIBRATION.

 

i had the same exact problem and one day i was workin on my car and i noticed on one of my tires had a very big bump on it so i had to put the old very bald ones on. but there is good news. i got brand new tires today!

 

bump.... so you either had a bubble or busted belt inside the tire. ive had 2 tires bubble before on me but i bought those wheels used. i figure just old cheap tires.

 

Cheap tires and brands are prone to "bubbling" from not being balanced correctly and poor manufacturing.