The term “friction coefficient” is defined as the maximum frictional force that be incurred between a tire that rolls on a road surface divided by the weight that rests on that tire. The calculation formula is:
Therefore, handling of a car on a dry road surface will depend mainly on the nature of the surfaces and the weight of the car. On a wet roads, other factors (such as the state and tire profile) should be considered. All objects and car parts in the real world will have some friction when they touch each other. An object such as rubber parts, for example, can have a coefficient of friction much greater than one. Value 0 means there is no friction at all between the objects and value 1 means the frictional force is equal to the normal force.
As the car accelerates or brakes quickly or it enters the turn at higher speeds will require higher traction forces generated by the tire-road combination. The combination tire-road will cause these forces in the maximum limit of the friction force (never above).