More important then tow rating is the cargo capacity rating for your Tundra. Open the drivers door. In the door jamb there may be a sticker stating Maximum Gross Vehicle weight, the front axle rating, the rear axle rating, and the maximum Cargo capacity. Additionally, in the towing specs chart you need to look at the Gross Combined Vehicle Weight Rating. This is the maximum weight your Truck (fully loaded ready to go RVing) and the Trailer your pulling can weigh. Find these numbers, get the weight of the Trailer and do not forget to add the tongue weight of the trailer onto your figure for your fully loaded Tundra. When you get all those figures, I think you are going to be very close, if not over, your Tundra capacity. Remember, always allow a safety margin of at least 15%. If it is rated to tow 10k LBS, Tow 8500 or less. Just MHO. Be safe and welcome to the Airstream world.