What the type of tread can tell you (Focus Turnier 1)

The outer side is erased (front tires): High cornering speed. Check wheel alignment, rotate tires on rims in direction of rotation (in workshop) or swap with rear tires.

The outer sides are worn down more than the middle of the profile: air pressure too low.

Beveled profile: incorrect wheel alignment, occurs mainly when only one tire is worn.

The middle of the profile is worn down more than the outer sides: occurs when driving frequently at maximum speed. The tires bulge due to centrifugal force, so they wear out more in the middle than on the outside. This defect is especially noticeable on the rear wheels.

Uniform washouts across the entire tread: the shock absorber is probably faulty (the tire dances on the road).

Washouts on both sides (distributed around the entire perimeter): a sure sign of imbalance. Have the wheels balanced.

The tread is heavily worn in one place: brake "bald spot". Occurs during locking braking only in cars without ABS.

Brake "bald spots": impossible with ABS

Wheel imbalance manifests itself as vibration of the steering wheel or shaking of the front of the car. The reason is the uneven distribution of mass in the wheels. The tires wear out quickly. Find a workshop as soon as possible and balance the wheels of your Focus.

Static imbalance (A): manifests itself already when the wheel is allowed to swing freely on a raised vehicle: the center of gravity itself will shift downwards. A wheel with static imbalance bounces when moving, shock absorbers wear out faster.

Dynamic imbalance (B): appears only at high speeds. The weighted area is not in the central plane of the wheel, but slightly shifted outward or inward. At high speed, the wheel vibrates and swings.