Question How to make the players turning arc circular in a 2d racing game

For context I am working on a 2D racing game and am trying to set up the player movement. The way that I am doing this is by adding forces to the player via the Rigidbody 2D component. The problem I have run into is that the turning arc is not circular like i want it to be. Instead it takes a teardrop shape which makes the movement feel out of control and unpredictable when steering. (I have a screenshot below to show what the turning arc looks like). I have absolutely no idea how to fix this and any help would be greatly appreciated.

Some info you should know about my player controller script:

I wrote a FSM for the player using this tutorial. The way the FSM works is: a script called Player Controller is attached to the player object. This script handles the states and calls the behavior methods of the state that is currently active. (For example: the Update method in the current state is called by the Update method in the player controller every frame).







Turning Arc:


Player controller script:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class PlayerController : MonoBehaviour
6. {
7.     #region StateVariables
8.     private PlayerBaseState CurrentState;
9.  
10.     public readonly PlayerDriveState DriveState = new PlayerDriveState();
11.     public readonly PlayerIdleState IdleState = new PlayerIdleState();
12.     public readonly PlayerStunnedState StunnedState = new PlayerStunnedState();
13.     #endregion
14.  
15.     public LapManager lapManager;
16.  
17.     #region PhysicsVariables
18.  
19.     public Rigidbody2D rb2;
20.  
21.  
22.  
23.  
24.     #endregion
25.  
26.     #region DriveStateVariables
27.     public float TerminalVelocity;
28.     public float RocketPower;
29.  
30.     public float BrakePower;
31.  
32.     public float TurnSpeed;
33.     #endregion
34.  
35.     public void Awake()
36.     {
37.         //Stores a reference to the LapManager script attached to the GameManager object
38.         lapManager = GameObject.FindGameObjectWithTag("Manager").GetComponent<LapManager>();
39.  
40.         //Calls the IdleState
41.         TransitionToState(IdleState);
42.     }
43.  
44.     // Update is called once per frame
45.     void Update()
46.     {
47.         CurrentState.Update(this);
48.     }
49.  
50.     public void FixedUpdate()
51.     {
52.         CurrentState.FixedUpdate(this);
53.     }
54.  
55.     public void OnTriggerEnter2D(Collider2D collision)
56.     {
57.         CurrentState.OnTriggerEnter(this, collision);
58.     }
59.  
60.     public void OnCollisionEnter2D(Collision2D collision)
61.     {
62.         CurrentState.OnCollisionEnter(this, collision);
63.     }
64.  
65.     public void TransitionToState(PlayerBaseState state)
66.     {
67.         CurrentState = state;
68.         CurrentState.EnterState(this);
69.     }
70. }
71.  

Player Drive State:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class PlayerDriveState : PlayerBaseState
6. {
7.     private Rigidbody2D prb2;
8.     private Transform pt;
9.  
10.     private float TerminalVelocity;
11.     private float RocketPower;
12.  
13.     private Vector2 ForceToAdd;
14.     private Vector3 RotSpeed;
15.  
16.     //Gets called when the State is activated
17.     public override void EnterState(PlayerController player)
18.     {
19.         //Stores references to the Player's components
20.         prb2 = player.rb2;
21.         pt = player.transform;
22.  
23.        
24.         TerminalVelocity = player.TerminalVelocity;
25.         RocketPower = player.RocketPower;
26.  
27.         //Sets up a turning vector for the player to use
28.         RotSpeed = new Vector3(0, 0, player.TurnSpeed);
29.     }
30.  
31.     //Gets called every frame
32.     public override void FixedUpdate(PlayerController player)
33.     {
34.        
35.         //Thrust
36.         if(Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.UpArrow))
37.         {
38.             ForceToAdd = new Vector2(RocketPower * pt.up.x, RocketPower * pt.up.y);
39.  
40.             prb2.AddForce(ForceToAdd * Time.fixedDeltaTime, ForceMode2D.Impulse);
41.         }
42.         else if(Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.DownArrow))
43.         {
44.             ForceToAdd = new Vector2(RocketPower * -pt.up.x, RocketPower * -pt.up.y);
45.  
46.             prb2.AddForce(ForceToAdd * Time.fixedDeltaTime, ForceMode2D.Impulse);
47.         }
48.  
49.         prb2.velocity = Vector2.ClampMagnitude(prb2.velocity, TerminalVelocity);
50.     }
51.    
52.     //Gets called every frame
53.     public override void Update(PlayerController player)
54.     {
55.         //Steering
56.         float i = Input.GetAxisRaw("Horizontal");
57.  
58.        
59.         pt.Rotate(-RotSpeed * i * Time.fixedDeltaTime);
60.  
61.        
62.     }
63.  
64.  
65.     //Gets called whenever the player collides with something
66.     public override void OnCollisionEnter(PlayerController player, Collision2D col)
67.     {
68.  
69.     }
70.  
71.     //Gets called when the player collides with a trigger
72.     public override void OnTriggerEnter(PlayerController player, Collider2D col)
73.     {
74.  
75.     }
76.  
77.    
78. }
79.