Sound when cruising between 30-40 m/hr

Hey Guys,
I recently got a used 06 galant. I noticed that when I am cruising between 30 to 40 m/hr there is a prominent wobbling kinda sound. I cant really make out where the sound is coming from, but it goes away beyond about 45 m/hr. Is it a common problem which can be easily identified and fixed or is it leading to something serious.

Check the heat shield. The clamps on those are usually very weak and wear out after awhile.

when i had this kinda droneing prblem which only happend at a certain speeds. it came out to be a wheel bearing. and i thought it was on the drivers side but it actually was on the paasengr side. im not sure if this will help.