SuiteSuccess Posted April 5 Report Share Posted April 5 Recently replaced a rotor and brake pads on one wheel of my daughter’s car due to a broken pad that came loose and gouged a groove in the rotor. Took it into my trusted tire shop to check the other wheels since suspected a warped rotor on front (steering wheel vibrations on braking). Turns out the other three rotors were undersized (car has 100k miles so needed rotors) so had them replaced. My question, however, pertains to the fact that I was “informed” that rotors/ pads must be replaced in pairs such as both front or both back at the same time to “balance” the braking. Her pads had been replaced 8 months prior and still had lots of material left on the other three. Now my question. From a physics standpoint not sure that this is a valid argument. The cylinders, fluid, etc has not changed and the pads ride in contact with the rotor so any hydraulic force applied will still be distributed equally to all wheels. The older pads are not going to have pulled away from a good rotor. So to my mind the amount of material on each individual pad (as long as safe and adequate)is immaterial and should make absolutely no difference in performance? They should be “balanced” regardless? Where is my analysis wrong? Quote Link to comment Share on other sites More sharing options...
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