loud noise in both rear wheels

Hello, noises are tough to judge in this forum. Hands / ears on diagnostic testing is really needed to figure out where noises you are hearing are coming from, and how to properly test them. It could be wheel bearing or axle related. I would recommend a first hand inspection to determine the source.

We would need to hear/feel it to give you a diagnosis. Give us a call at 609-689-0688 and Charlotte will be glad to get you an appointment.