What effect does having the left foot on the tirewall have?

Having the left foot on the tirewall indeed helps with smooth braking. This technique is often part of advanced driving, particularly in performance contexts, where drivers use their left foot to control the brake pedal while the right foot manages the throttle. By keeping the left foot on or near the tirewall, it allows for quicker reactions to various driving conditions, enabling more effective modulation of braking.

This method can lead to smoother deceleration and better control of the vehicle during cornering or in emergency situations, as it allows for a more immediate response to the need for braking without having to switch foot placement or adjust body position significantly.

Utilizing this positioning enhances the driver's ability to maintain stability and control, crucial elements in both everyday driving and competitive scenarios.