I've had my rear right rotor replaced, and the mechanic said that the calipers might need to be changed soon.

I am suspecting that the rear caliper is sticking, because after just a 10 min drive, if I put my hand close to the wheel, it is EXTREMELY hot, whereas the other 3 wheels are cold.

Also, I think it is causing my car to pull to one side, because the caliper is sticking, is this true? I have uneven tire wear even after getting an alignment and rotation.

When I come to a stop, the car sags on one side...it really seems like the calipers are causing me probs...

Thanks for any help...

 

thats not a caliper issue at all, sagging one one side i would say would be either a strut or spring issue, the uneven tire wear is due to an alignment or balance problem, and the hot wheel could even be a wheel bearing itself. My buddys civic ex has a bad wheel bearing in the rear wheel and after highway driving the studs on the wheel hub will be glowing from the friction.

 

My mechanic said that I would be hearing noises if it was the wheel bearing.
So, I need to free up the caliper somehow.

As far as the sagging goes, the car's shocks are fully functional, and when the car is parked, I don't notice it leaning to one side. It is weird because only when I come to a stop it starts leaning. It slowly leans to the right, and when I accelerate, it stops leaning.

 

the exact thing happened to me.
your caliper is bad, get a new one.