Stages of work
First, drive at walking speed. Press the clutch and brake as hard as you can. Compare the tire tracks on the road: if the tracks are the same length, the brakes pull equally. Do the same exercise with the handbrake.
Increase the speed to 50 km/h. Take a loose grip on the steering wheel and do not adjust the direction of travel while braking. First brake gently, then brake sharply until you stop. The car should confidently hold the direction until it stops. If the car pulls to one side, you should contact a specialized workshop with a brake system test stand.
Now, after this test, let your Focus roll freely from a standstill on a slightly inclined section of road. This will establish whether the wheels are free and whether they move easily. After a short drive, check the temperature of the rims with your hand: they should be equally warm.
(The original can be found on the specified resource: FordBook)