1. Different pressure in the tires of the front wheels (see «Tires - pressure check»).
2. One of the brake mechanisms is faulty (see «Checking the technical condition of the brake system»).
3. Pinched hose or pipeline of one of the brake mechanisms (see «Checking the technical condition of the brake system»).
4. Different degree of wear of parts of the brake mechanisms of one of the axles of the car (see «Checking the technical condition of the brake system»).