I tow a 25' Coleman with a 2003 Tundra Access Cab - meaning the small rear doors. It has the towing package and the 4.7 V8. It is wired for the brake controller if you have the tow package. My TT weighs 1000 lbs less loaded than what you stated. I used the CAT scales and am just under specs. My towing experience is just OK. I did OK on my longest trip to Stone Mountain last year but that trip put me in the market for a 3/4 ton. Most of our stuff goes in the TT - It's me and the wife and a 5 year old. I imagine your payload is going to be less because you have the crew cab. And I have to agree, but it sounds like your Tundra will be overburdened. Work out the actual numbers using a CAT scale - and heed the advice here - you can pretty much weed out advice that states "you should be OK" or "I don't see an issue" Find out for yourself. If you feel that it may cut the mustard, then have the brakes overhauled, change all the fluids, espically the transmission and make sure the tires met OEM specs.
