* The year of the Explorer: Tire brands and models change over time.
* The trim level of the Explorer: Higher trim levels may have different tires than base models.
* The factory options: Some options might influence tire selection.
* The specific dealer: Dealers may have slightly different stock on hand.
To know what brand of tires are on *a specific* Ford Explorer, you need to look at the sidewall of the tire itself. The brand name will be clearly printed there.