I was wondering about the 10,000# pull also and found this:
The expanded size and power of the new Tundra will be reflected in its ability to tow over 10,000 pounds. To achieve this towing capacity every major component was designed for maximum strength, durability and reliability over the long haul. This will be accomplished with an all-new 5.7-liter i-Force V8 engine manufactured at Toyota's Alabama engine plant. The V8 will be mated to a new heavy-duty six-speed automatic transmission. In addition to the new powertrain, Tundra will also come equipped with heavy-duty front disc brakes with four-piston calipers and vented rotors increased by nearly one and one-half inches, and standard rear disc brakes. High capacity cooling and electrical systems will help Tundra tow heavy loads through the toughest weather. Finally, Tundra will ride on a new rock-solid chassis platform with 30 percent higher tensile strength steel.
found it here:
Chicago Auto Show: Toyota goes BIG with 2007 Tundra - Autoblog
The expanded size and power of the new Tundra will be reflected in its ability to tow over 10,000 pounds. To achieve this towing capacity every major component was designed for maximum strength, durability and reliability over the long haul. This will be accomplished with an all-new 5.7-liter i-Force V8 engine manufactured at Toyota's Alabama engine plant. The V8 will be mated to a new heavy-duty six-speed automatic transmission. In addition to the new powertrain, Tundra will also come equipped with heavy-duty front disc brakes with four-piston calipers and vented rotors increased by nearly one and one-half inches, and standard rear disc brakes. High capacity cooling and electrical systems will help Tundra tow heavy loads through the toughest weather. Finally, Tundra will ride on a new rock-solid chassis platform with 30 percent higher tensile strength steel.
found it here:
Chicago Auto Show: Toyota goes BIG with 2007 Tundra - Autoblog