Brake pads Hella Pagid or GALFER

I run Pagid yellows, and yeah, they love to squeal when they're cold. Cold, as in, like you said, not at track driving operating temperature. Occasional street driving is loud, but I don't concern myself with that.

Not only is the yellow pad performance better at the track, but they are Pagid's "endurance" pad, so, at least compared to stock, they last a good deal longer too. Performance and durability are easily worth a little noise to me.

I put ~$120 worth of good Pagid pads on my 525i and had ZERO regrets. Especially for being freakin' $880 cheaper than the dealership! Brake pads take all of ten minutes to DIY, no reason to spend that much.

Galfer Front Brake Pads Brand New not imported to the USA- $110+shipping