Attempting to add wheel friction to a 2d car

I am trying to create wheel friction in a 2d space. I am trying to use the equation f=m^2/r. This equation is used to calculate the forces acting on a vehicle perpendicular to its vector of travel. Currently the code isn't working correctly. It is hard to explain but basically it adds force bi natter what direction it goes. But I need it to apply the force in the relative x direction. Again it is hard to explain but I would like some advice on what to do. I will post all the code:

 var power : float = 3;
 var maxspeed : float = 5;
 var turnpower : float = 2;
 
 var mass : float;
 
 var moving : boolean = false;
 var turnright : boolean = false;
 var turnleft : boolean = false;
 
 var rightforce : float;
 var leftforce : float;
 
 var friction : float = 10;
 
 var curspeed : Vector2;
 var curspeedtrue : float;
 
 function Update () 
 {
     mass = rigidbody2D.mass;
     
     rightforce = -(rigidbody2D.velocity.x);
     leftforce = rigidbody2D.velocity.x;
 
     curspeed = Vector2(rigidbody2D.velocity.x, rigidbody2D.velocity.y);
     if(curspeed.magnitude > maxspeed)
     {
         curspeed = curspeed.normalized;
         curspeed *= maxspeed;
     }
     
     curspeedtrue = rigidbody2D.velocity.x + rigidbody2D.velocity.y;
     
     if(moving == true)
     {
         rigidbody2D.AddForce(Vector3.right * mass * (curspeed.magnitude * curspeed.magnitude) / turnpower);
         //rigidbody2D.AddForce(-(Vector2.right) * mass * (curspeed.magnitude*curspeed.magnitude));
     }
     
     if(curspeed.magnitude <= 0)
         moving = false;
         else
         moving = true;
         
     if(Input.GetKey(KeyCode.W))
     {
         rigidbody2D.AddForce(transform.up * power);
     }
     
     
     if(Input.GetKey(KeyCode.S))
     {
         rigidbody2D.AddForce(-(transform.up) * power);
     }
     
     if(moving == true)
     {
         if(Input.GetKey(KeyCode.A))
         {
             transform.Rotate(Vector3.forward * turnpower);
             turnleft = true;
         }
     
         if(Input.GetKey(KeyCode.D))
         {
             transform.Rotate(Vector3.forward * -turnpower);
             turnright = true;    
         }
             
 
     }
     
     if(Input.GetKey(KeyCode.A) !=true)
         turnleft = false;
         
     if(Input.GetKey(KeyCode.D) !=true)
         turnright = false;
 }