[McLovin]

3 series BMW with 4 wheel discs. This car is not driven often (once a month or so).

Brakes have always operated silently.

I put on a set of new wheels and tires. Didn’t touch the brakes.

Rotors and pads have less than 5,000 miles on them.

Immediately after putting the new wheels and tires on, i get a low speed classic disc brake squeal. Only happens at around 15-20 mph with medium brake pressure.

It’s hard for me to hear which wheel it’s coming from. So I apply the handbrake to slow the car down, and I hear the squeal. (It has the type of rear calipers that apply the brake pads when you pull the handle, rather than the type that have a separate internal drum brake for the ebrake).

So I figure I found at least which end it’s coming from.

I take the rear pads out, clean and grease everything, and put new pads in.

Oddly, the exact same squeal is still there, except this time it only is there when I use the regular brakes. When doing the handbrake, it’s silent.

So I take the front brake pads out, clean and grease, new pads.

Still the same sound.

I can’t see how that can be. The exact same sound, but with different pads. These are not performance pads, but low noise pads with anti squeal backings.

Not sure what the next step is.