On Thursday evening, I noticed that the rear brake rotors on my A4 Avant quattro were glowing red. The brake pads were completely worn out, so I had a job to do on Friday afternoon *grrrrrrr*

. I replaced the pads, but the calipers were not seizing (both rear, left and right). Now the question is, where could this be coming from? The car only has 37,000 km, and the front pads are still in great condition!
M.