Endless runner track script

Hi guys,

i'm trying to get better and better in unity, right now im creating an endless runner game to practice.

I want your opinion on the script i just created to create the track.

 public class TrackManager : MonoBehaviour {
     
     public GameObject tileOne;
     public GameObject tileTwo;
     public GameObject tileThree;
     public GameObject tileFour;
 
     public GameObject player;
 
     public float tileDepth;
 
     void Update()
     {
         if(player.transform.position.z > tileThree.transform.position.z)
         {
             GameObject newTileOne = tileFour;
             newTileOne.transform.position = new Vector3(tileOne.transform.position.x, tileOne.transform.position.y, tileOne.transform.position.z + tileDepth);
 
             tileFour = tileThree;
             tileThree = tileTwo;
             tileTwo = tileOne;
             tileOne = newTileOne;
         }
     }
 }

What i do is rather easy. I create by default 4 tiles in my scene, making them long enough (Z axis) so three of them fill atleast the range of my camera. As you can see in my script i just place the last one in front of the first one and so on.

This means i reuse my tiles, i think thats good practice?

However when i start walking i ofcourse notice that my players Z axis point is increasing the further i walk. If a player of my game is very good and he reaches very far that Z axis point will be so long i can't even imagine. Is that a problem? Or is that not a problem as long as i make sure i destory all game objects behind me (out of camera view).

Thanks!