Which method has a tighter turn radius?

Differential braking offers a tighter turn radius because it allows for independent control of the aircraft's wheels. By applying brakes selectively to one wheel or a set of wheels, the aircraft can pivot more effectively around a central point. This technique enhances maneuverability, especially on the ground, allowing the aircraft to navigate in tighter spaces or during low-speed taxiing operations.

In contrast, nosewheel steering typically provides a more limited range of motion when compared to the precision control afforded by differential braking. While it does assist in steering while on the ground, it does not allow for the same degree of tightness in turns as differential braking can achieve. Standard braking affects all wheels equally, which can lead to a larger turning radius due to the lack of differential control. Consequently, differential braking stands out as the most effective method for achieving a tighter turn radius.