My brakes were working fine before I had new tires put on front and back but now they fill like they have air in them. I bleed them all the way out and no air came out. My bike is a 06 ultra classic with 15000 miles. When i apply the front or back brakes now the peddle goes down further than befor and filles spongey. Have bleed them both 4or5 times each and still the same. If i push down to hard on the back brake the tire sounds like its wanting to slide. Brake pads are ok and in good shape. Thanks for the help in advance.