No quick tweak. But yes, you can increase the steering angle so the plane has a greater turning radius in the aircraft.cfg file.
Backup the original aircraft.cfg, then open the aircraft.cfg you want to change with your favorite text editor such as Notepad.
Go down the list until you find the [contact_points] section.
Find the proper Point. which is the nose gear. Example: This is the Airbus 321 which is
point.0=1
Look across the point.0=1 to the 7th number which is 55.92. That is the steering angle for the nose wheel. You can increase the number of your plane up to 90 degrees.
point.0=1, 43.00, 0.00, -9.70, 1600, 0, 1.442, 55.92, 0.6, 2.5, 0.9, 4.0, 4.0, 0, 220.0, 250.0
This is what the numbers mean from left to right
//0 Class
//1 Longitudinal Position (feet)
//2 Lateral Position (feet)
//3 Vertical Position (feet)
//4 Impact Damage Threshold (Feet Per Minute)
//5 Brake Map (0=None, 1=Left, 2=Right)
//6 Wheel Radius (feet)
//7 Steer Angle (degrees)
//8 Static Compression (feet) (0 if rigid)
//9 Max/Static Compression Ratio
//10 Damping Ratio (0=Undamped, 1=Critically Damped)
//11 Gear Extension Time (seconds)
//12 Gear Retraction Time (seconds)
//13 Sound Type
//14 Airspeed limit for gear retraction (KIAS)
//15 Airspeed that gear gets damage at (KIAS)
Or you can just use the brakes to tighten the radius, assuming you have set left and right brakes separately.