how do I "Tilt" this while moving

While moving in "Horizontal" and "Strafe"

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class HoverMotor2 : MonoBehaviour {
6.  
7.     public float speed = 90f;
8.     public float strafeSpeed = 90f;
9.     public float turnSpeed = 5f;
10.     public float hoverForce = 65f;
11.     public float hoverHeight = 3.5f;
12.     private float powerInput;
13.     private float turnInput;
14.     private float strafeInput;
15.     private Rigidbody carRigidbody;
16.  
17.  
18.     void Awake ()
19.     {
20.         carRigidbody = GetComponent <Rigidbody>();
21.     }
22.  
23.     void Update ()
24.     {
25.         powerInput = Input.GetAxis ("Vertical");
26.         turnInput = Input.GetAxis ("Horizontal");
27.         strafeInput = Input.GetAxis ("Strafe");
28.  
29.         if (Input.GetButtonDown ("jump")) {
30.             Debug.Log ("Space is pressed");
31.         }
32.  
33.     }
34.  
35.  
36.     void FixedUpdate()
37.     {
38.         Ray ray = new Ray (transform.position, -transform.up);
39.         RaycastHit hit;
40.  
41.         if (Physics.Raycast(ray, out hit, hoverHeight))
42.         {
43.             float proportionalHeight = (hoverHeight - hit.distance) / hoverHeight;
44.             Vector3 appliedHoverForce = Vector3.up * proportionalHeight * hoverForce;
45.             carRigidbody.AddForce(appliedHoverForce, ForceMode.Acceleration);
46.         }
47.  
48.         carRigidbody.AddRelativeForce(strafeInput * strafeSpeed, 0f, powerInput * speed);
49.         carRigidbody.AddRelativeTorque(0f, turnInput * turnSpeed, 0f);
50.  
51.     }
52.        
53. }
54.  

 

https://forum.unity.com/threads/how-to-move-player-one-step-on-touch.496743/#post-3239298