Greetings! I am new to this forum and subject and have a couple of "newbie" questions. My wife and I want to buy a TT to tow behind our Toyota Tundra. Our model is rated to tow 7,100, lbs. Being conservative we are not looking at any travel trailor that has an "unloaded trailer weight (w/ hitch weight), over 3,750 lbs. We hope to travel both to the Florida beaches and up to 4,000' up in the Smokies. Is this weight limitation reasonable? Am I too conservative on this limitation? How much can the Tundra REALLY tow? I have 16" wheels on this truck, should I have gone with the 17" wheels? Thanks for your input and assistance. Hoping to be in the campgrounds in the near future.