I am new to this forum and to the Lexus world. Excuse my ignorance if see it.

Not so long ago, I got myself 2010 LS460 AWD with 154k miles on it. Overall the car is in good condition except vibration starting at 40mph in front of the driver's side. I have replaced upper bushings with Nisto ones. The vibration got a little less but still persists. The shocks seems to be in good condition and lower arms might need some attention. My question is - can lower bushing cause vibration felt even at the steering wheel? Thank you!

 

I'm guessing you've checked out the wheels/tires? A chinsy trick- rotate the tires and see if it persists. If it follows the tire, you have a bent rim. If you are in NH (as your profile says) there's a great possibility the previous owner ****ed up one of the rims and never fixed it. Potholes in this part of the country are absurd, so this type of damage is common.

 

Wheel rotation is the first thing I tried. Though, I forgot to mention it. Thank you for your reply.

 

There are some known issues with vibration like this in the AWD cars. Could be something as simple as a tire that can't be balanced properly or it could be the known driveshaft issue.

 

I have rotated tires and even swapped left and right rotors but the issue persists. The wheel bearing has no play. It could be the axle or the axle internal bearing. The vibration starts at 30 mph not at 40 as I previously thought. Also, the lower control arms seem to be in a good condition but will require replacement at some point.