I have an 04 TSX and the front end shakes while breaking. I don't feel it in the pedal but the steering wheel. I've replaced the front rotors and calipers 4 times and it keeps coming back after about 3mos, so that's not the problem.Did the rear rotors, but not calipers. Tires were replaced and balanced. Heavy downshifting almost eliminates the problem, but not completely. My mechanic is clueless as is the Acura dealer, any suggestions?