I just bought a used ES300 2 weeks ago and have had it in the shop twice.
Once to get wheel balance done on all tires to remove a shaking that was present. That did fix the shaking in the steeering wheel and front end (mostly) but there is still a noise in the back.
Second time to replace the pads and rotors in the front brakes and fix a noise when driven between 100 and 115 KMH. At that speed there is an oscillating noise that sounds a like a train. It gets worse after about 15 minutes of driving as well. It is loud enough to be truly annoying, even making it difficult for those in the back to hear conversation.
Dealership is saying it is just noisy tires. They are Kumho tires so I'm doubting this. I could even agree if it was a consistent ambient noise, however; there is this patterned oscillation (Train noise) that makes me think there is something else wrong.
Tires have plenty of tread and pressure is correct, wheels are balanced (Perhaps their wheel balancing machine is off?), and they say it is not the bearings.
Should I replace them with the winter tires I have and see if that makes a difference?
I'd like any input you may have.
