General Maintenance & Repairs - weird popping noise from rear wheel

have a strange "popping" noise coming from what sounds like my rear passenger wheel somewhere. not the u joint. already inspected that and its fine. anyone else have any ideas before i take it to a shop? does it at low speeds, then when im on the highway it either stops or i cant hear it anymore. i have 142xxx miles on my car.

it could be a something with ur differential.

anyone?

when was the last time your differential fluid was changed? If its been a while that may be your problem.