hi i have a 81 280zx that makes a rubbing/wobbling sound in the right rear wheel when i reach about 35-40 mph if any one could help a guy out and let me know what it could be i would really appreciate it thanks.

 

Welcome
Jack Ur Car Up And Wiggle The Tire up Down Side To Side If It Moves Then U Have A bad Bearing And Che Ur Brakes See If There Not Sticking Or The Caliper Loose Or Somin

 

What he said, but you may not even be able to move the tire by shaking it, but that doesn't mean you don't have a bad bearing. Since you said it was making a sound, it is probably the bearing, if it were shaking the car, your tires are out of balance.

 

And FYI, if you're doing much driving replace the wheel bearings immediately or you'll have a meltdown on your hands.. literally.