I have a 2011 ES 350, 30k miles. Tires were rotated at 23k. Now im hearing a whomping noise in the front end. Took car back to garage and told them about the noise. They balanced the tires- still having that noise and it gets loader when speed increases. Not sure if anyone else has had this problem or next steps to take. I'm annoyed because I've never had problems with Lexus especially this new. Any help or advice would be appreciated.

 

If it is not the tires from uneven wear or feathering, sounds like it is likely the front wheel bearings. You should still be in the warranty so just take it back to the dealer...

 

If the "whomping" sound started after the tire rotation, it's got to be connected to the tire rotation. Move the front wheels to the back and see if the "whomping" sound changes/moves to the back. "Whomping" sounds are usually caused by a tire issue.