@Rahul Singh and @Gaurang Singh. I had the same noise of Boot wheel initially and had made the service center people come again and again to my home to fix it but they were unable to do so. Finally it was a production issue of using the metal part which goes and locks into the boot. Service center came to my office with a new spare which was full made of hard rubber. Once they changed it, the noise was gone. @Gaurang Singh. Rightly said. It takes out all the pleasure of driving the beast even when you have light rattling noise.