Make sure the axle hub surface & back sides of the rotors that butts up against the axle hub, are Both clean of rust & any nicks or dings. These mating surfaces need to be Clean & Flat.
Then install the wheels & snug the wheel lug nuts down evenly by hand, then use a Torque Wrench to tighten them Evenly in a criss cross pattern, to spec, in say three even steps.
I did the above on my 94 3.8L last year after installing new ceramic pads & replacing the rotors with Wagner, a nice piece of work. No more intermittent vibrations. Nice smooth stops from high speed.
Take the time to look up & perform the pad & rotor manufacturer bedding in procedures & let us know how it goes.
94 Taurus GL 3.8L PEP204A
99 Ranger XLT 4dr 4.0L 5spd Auto
Payload & Tow Pkg
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