ohjaustunto

Ohjaustunto (steering feel) is a term used in automotive engineering to describe the perceived feedback from a vehicle’s steering system to the driver. It comprises the tactile and rhythmic sensations transmitted through the steering wheel, column, and associated components, as well as the influence of steering torque, assist level, and road and tire feedback. The concept combines mechanical characteristics of the steering system with the dynamic response of the vehicle to produce a coherent sense of how the car is behaving.

Purpose and function

Ohjaustunto helps the driver sense road conditions, tire grip, and vehicle dynamics, enabling precise steering input and safer handling. A well-tuned steering feel provides intuitive feedback that supports lane positioning, cornering, and stability under varying speeds and loads.

Factors influencing ohjaustunto

- Steering system design: steering ratio, mechanical play, damping, and the characteristics of the linkage or rack and pinion; hydraulic or electric power-assisted systems and any software control in electronic power steering (EPS).

- Road and tires: surface texture, tire type and condition, inflation, and temperature.

- Vehicle dynamics: suspension setup and mass distribution, speed, and inertial effects.

- Drive modes and controls: many systems allow adjustment of feel through modes (comfort, sport, Eco), and some active steering systems modify feedback in real time.

Evaluation and implications

Ohjaustunto is assessed through subjective driver feedback and objective metrics such as steering torque versus angle, dead zones, and response consistency. Manufacturers balance comfort and responsiveness; overly stiff or overly light feel can affect fatigue, precision, and perceived safety.