Answer:
A thousand wheels, but move I do not. Call me what I am, call me a lot. What am I?
I save lives on the ground and in the air. What am I?
I belong to you but others use me more often than you do. What am I?
If a man carries my burden they will get crushed to death. Though not rich I leave silver in my track.
Keep doing me to avoid lens dryness
I am rarely touched but often held. If you are smart you'll use me well. What am I?