Put about 500 miles on my 05 RK after a new 21" wheel and developed a squeal at low speeds. Not a normal brake squeak but more like a whine. When I apply the brake the sound will stop but it sounds terrible when I'm crawling to a stop sign or something. Any ideas what it could be? Thanks

 

When you got new wheels did you also get new rotors and pads? If you fit new rotors but not new pads, it may be vibration at a certain speed till the pads wear to the rotors. Just guessing here.

 

I got new rotors but didn't need new pads yet

 

I had the same problem when I replaced my front wheel and rotor. Check your caliper mounting bolts rubbing against the rotor. Mine were going in to far and hitting the rotor.

 

Stock calipers? Probably need to clean the caliper pistons.