from a sporting point of view, preferable that it can be disabled. Static alignment of the wheels Of course things should be the same, left and right, for road cars. Camber affects steering because a tire generates a force towards the side that the top is leaning towards. This is called camber thrust. Additional front negative camber is used to improve the cornering ability of cars with insufficient camber gain. Rigidity of the frame The frame may flex with load, especially twisting on bumps. Rigidity is considered to help handling. At least it simplifies the suspension engineers work. Some cars, such as the Mercedes-Benz 300SL have had high doors to allow a stiffer frame. Driver handling the car Handling is a property of the car, but different characteristics will work well with different drivers. Familiarity The more experience a person has with a car or type of car the more likely they will be to take full advantage of its handling characteristics under adverse conditions. Position and support for the driver Having to withstand "g forces" in his/her arms interferes with a driver's precise steering. In a similar manner, a lack of support for the seating position of the driver may cause them to move around as the car undergoes rapid acceleration (through cornering, taking off or braking). This interferes with precise control inputs, making the car more difficult to control. Being able to reach the controls easily is also an important consideration, especially if a car is being driven hard. In some circumstances, good support may allow a driver to retain some control, even after a minor accident or after the first stage of an accident. External conditions that affect handling Weather Weather affects handling by changing the amount of available traction on a surface. Different tires do best in different weather. Deep water is an exception to the rule that wider tires improve road holding. (See aquaplaning under tires, below.) Road condition Cars with relatively soft suspension and with low unsprung weight are least affected by uneven surfaces, while on flat smooth surfaces the stiffer the better. Unexpected water, ice, oil, etc. are hazards. Common handling problems When any wheel leaves contact with the road there is a change in handling, so the suspension should keep all four (or three) wheels on the road in spite of hard cornering, swerving and bumps in the road. It is very