I just completed doing a conversion from some frozen drums to bears cheepest (if you can call it that) conversion kit. Since the first install I have had nastly howling which the best I can describe sounds like trying to drive with the e-brake engaged with squeeky brakes to begin with,... on a semi. Its not high pitched, its more like the groan of the e-brake, but much much louder.

I taked to Baer about it, they said my brakes/rotor were way out of alignment. First go round I could actually see the tire wobble with the car jacked up in the air, so I believed them.

So I had my axles turned down so that in the car I have 0.003" play measured on the ouside of the flange, down from about 0.017". Then I got hold of a pile of shims and made the rotor only wobble with about 0.010" play, which is not bad at all, thats 1/100th of an inch, nothing right??? I then lined up the calipers onto the rotors and here is where I think Im having the problem. I have the rotors aligned as best I can (well within Baers specs) on the rotors, but since I dont have small enough shims (0.003" is smallest I go) the calipers sit on angle to the majority of the rotor. As in the top of the caliper angles in slightly compared to the outside, on both sides. Would this hurt it? Were talking 0.002" difference.

All that shimming pretty muched halved the noise, but now its loudest with reversing, especially reversing when turning.

I know thats a pile of numbers, but does anyone know what typical tolerances are on rotor wobble for cars? Or am I looking in the wrong area completely?

Thanks?

 

I have Baers front and rear, I have this same issue w/ my rear brakes making noise. Anyone know a fix for this?