In its third year as Toyota's full-size truck, the 2003 Tundra had some subtle changes, including a redesigned grill and an available step-side bed. There were fifteen possible design configurations, which included two different engines and three possible tire sizes.
Your Tundra had three different tire size options -- 245/70/16, 265/70/16 and 265/65/17. The tire placard sticker in your driver door jamb indicates the tire size that the truck came with.
