2011 Toyota Tundra Regular Cab Owners Manual - Page 296
2011 Toyota Tundra Regular Cab Manual
Page 296 highlights
2-5. Driving information n Unbraked TWR (Unbraked Trailer Weight Rating) (Without brakes) The trailer weight rating for towing a trailer without a trailer service brake system. n Tongue Weight The load placed on the trailer hitch ball. (→P. 275) n Kingpin Weight The load placed on the 5th wheel mount or the gooseneck ball. (→P. 275) 268