Brake Caliper Pair in Washington, D.C.

Road salt seizes the slides, and the pads tell you

A floating caliper has to slide on two greased pins to press both pads evenly. Salt gets past the boots, the grease emulsifies, and the pins stop moving.

What follows is unmistakable once you know it: the inner pad wears out while the outer one still looks new, or the reverse. "The pads were fine on that side" is the symptom rather than good news, and fitting new pads to a seized caliper wears them the same way within months.

That is why a loaded caliper — bracket, pins, boots and hardware — is usually the right buy here rather than a rebuild kit for one that is already pitted.

Corrosion between the rotor and the hub

The freeze-thaw cycle drives water into every gap and it finds the joint between the rotor hat and the hub face. Rust there is a layer of unevenly thick material under the mounting surface, which is exactly what lateral runout is.

It is felt as a pulsation through the pedal and blamed on a warped rotor. Cleaning the hub face back to bare metal is the step that actually fixes it, and it is the one that gets skipped.

Pothole season is a defined part of the year here.

Does this state inspect your car

The District inspected private vehicles for seventy years, from 1939 until the programme ended in 2009. A dragging caliper is found by whoever looks at the pads, which in practice means after one pad is gone and the other still looks new.

Pothole season

The freeze-thaw cycle here is sharp and the streets are patched rather than resurfaced. Late winter produces a crop of potholes that the suspension absorbs.

The energy from a hard strike does not stop at the wheel. The bearing races take small indentations that go silent for months and then rumble. Camber and toe move when a control arm takes a hit, which shows up as a pull or as a tyre wearing one shoulder. Bushings tear under shock loading rather than wearing out.

What else Washington, D.C. does to a car

The lowest annual mileage in the country, with long idle periods between journeys — brakes rust in place and batteries sulphate rather than wear out.

What we hold, and what it costs

10 options from Cardone, Centric, Dorman, Power Stop and Raybestos, from $219.99 to $349.99. Prices are firm — where we have no price we publish none.

We are a reseller rather than a manufacturer: we source the part, check it over and sell it, and we confirm it against your year, make, model and engine before it ships rather than asserting a fit on the page. We ship anywhere in Washington, D.C., including Capitol Hill, Georgetown, Columbia Heights and Anacostia.