mine vibrates at about 80 too

just figured it was a crappy tire. Going to test my tie rods by jacking up each front tire separately and see if the wheels wiggle left to right.

I guess that is the test huh ?

what makes them go bad ?

 

You can't really eyeball a tire. Somethings wrong with your tire if you have to constantly pump it up. Maybe a leak somewhere? To answer your question though, the vibration could be due to the over inflated tire.

As per Tire Rack, "An over inflated tire will have a higher spring rate and will produce excessive road shock. Over inflated tires will transmit road shock rather than reduce it."

 

has anyone checked their bushings ???

 

Hey I think this was the first thread that I was able to help someone from my experience! Im glad your car is doing better Killerlexus!

 

my sedan starts vibrating at as soon as i hit about 70mph,i hear a humming sound that ,i feel it shaking a little in my arm rest area and the rear view mirror starts shaking, the steering wheel vibrates a little too, it vibrates more as i let go of the gas pedal, when i accelerate it kinda goes away, this vibration goes away when i actually go faster , i had my tires balanced & rotated & that didn't fix the problem, i am running toyo proxes tpt 215/55/17, one time i inflated the tires to 42 psi cold that kinda made it better but the ride was too stiff, tried 32 but that's too low & i tried everything in between, nothing helps

 

i'm having a similar problem in my ride, but I'm getting the vibration at 60-90kmph. After this point the vibration goes away, but the road noise at highway speeds is pretty bad.

Just had 4 new winter tires put on the stock rims and balanced. Also got an alignment. Noise + vibration is persisting.

I was told it was the passenger front wheel bearing (which the guy said simply by test driving it around the block). Is this possible? Or is it more likely the tie rod ends?

 

yea wheel bearing noise starts kicking in at around 60 kmph (my experience with the cars i had) so your problem might just be the wheel bearing, me, i don't have any wheel bearing noise just the vibration that starts at 105kmph

 

yeah - turned out it was my wheel bearing - put it on a jack and spun the wheel and I could hear a very faint clicking.

Have replacement one coming in from riverside next week.