回複：你確定聲音是後輪來的？

Good question: I somehow still feel the noise is coming from rear, but maybe I am wrong. What you said is exactly like the technician said.

The confusion is that the left rear tire is the only one had problem: sometimes it had burning smell. That is why I tried to link the problem with this tire.

I need to check to see if it is still covered by the warranty.