To some degree this can be normal, as rust gathers quickly on the front
rotors(assuming that's where you are feeling this) this causes the grinding
and grabbing in the front rotor. Now there is another condition in the rear
shoes binding on the first few apps., when wet.
I have to differ with you here, moisture on the rear shoes can cause slight
grabbing on start up, this has been a common condition for years with the
ford ranger pick ups and some fwd gm cars, there are even updated brake
shoes to try and reduce the condition.
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