Coupe Rumbling

okay guys so it feels like comming from my driver side wheel well alot of rumbling , the sound is almost as if the tire was rubbing the chassis or anything else and i have already checked if its the tire(ITS NOT) and idk what else it can be when i accelerate i start to hear this sound its like thud... thud.... thud ...and then when i go faster is more rapid like thud thud thud thud thud and when i brake it slows back down again and like i said ITS not the tire i took the front bumper off and checked if the tire was hitting anything and its not , could it be anything else like my rotors are warped because one i start doing 40+ the rumbling rumbling gets bad.