The steering ratio is a measurement that describes the relationship between the angle of the steering wheel and the angle of the wheels on a vehicle. It is expressed as a ratio, such as 16:1, meaning that for every 16 degrees the steering wheel turns, the wheels turn 1 degree. A higher steering ratio indicates that the steering wheel must be turned more to achieve the same wheel movement, which can lead to a more relaxed driving experience. In contrast, a lower steering ratio allows for quicker wheel response with less steering wheel movement, making it ideal for sports cars and performance driving. The choice of steering ratio affects vehicle handling, responsiveness, and overall driving comfort, influencing how drivers interact with their vehicles, such as cars or trucks.