ABS clunking, noisy, felt in brake pedal, O.K.? w124

[dirtysocks]

Well, I just got home from a 4 hour commute that normally take 1/2 an hour, because of the "blizzard" we got in New York today. My first exparience driving my 300e in the snow. I actually was suprised, it was not that bad. From this forum I had a preconception that it was horrible in snow, but it is much better than the 86 Regal I used to drive. Anyway the ABS brakes came on for the first time. I was suprised to hear loud clunking and feel vibration through the brake pedal when they engaged. Is this normal? They worked ok but all other ABS I've ever experienced were not noisy like this. I just didn't think that obnoxious clunking could be a normal sound.