This is when I took the tire off the front passenger side (none of the other ones are rusty like this)
I just noticed that the wheel "center cap" is missing. Does anyone know the size of these in millimeters? So i can order a replacement. Do you think that is where the rust came from? Because there is no center cap? Because all the other 3 wheels do have a center cap. Is there something I can do to correct the rust? Is this something I need to worry about?