The Toyota Tundra is a full-size pickup truck. It is sold by Toyota in the United States. The Tundra was first sold in 2000. The truck is bigger than the Toyota Tacoma. There are four different versions of the Tundra. These are the original, "base", version and the "SR5", "Grade", and "CrewMax" versions. The Tundra is made in San Antonio, Texas. The design of the truck was changed for 2007. The Tundra was a replacement for the Toyota T100 pickup, a bigger version of the Toyota Hi-Lux.