Bro first of all confirm about the hub by lifting your car and ask mechanic to rotate tyre and listen carefully if any sound appears.If your hub is ok then go for tyre changing option.
What my mechanic did,he replaced my car wheels with his daewoo and the sound was reduced.As he got dunlop LM703 R14 185/65 and the size of my tyre was same.I wasnt satisfied so i called my friend,he got yoko A drive in his car.I've checked using those tyres and the sound was completely vanished.I took my car to "khan traders" from where i've bought continental CC5 and he was shocked to listen my statement and said i'm the first customer who is complaining.Well he agreed to replace all tyres with german ones.Its a new brand made by continental company named (viking).
You can get this tyre from "khan traders" melody market.I will provide you his contact details by tomorrow INSHA ALLAH