I want to increase the payload of my 07 Toyota tundra. I have been told about airbags and Rancho shocks. is this the best way? What about extra leaf springs? How much of a payload increase can i expect to get? Also I'm looking to get a used truck camper under 2000 lbs for around $5000. Any reccommendations? I would have to have a bathroom with a shower.

Tony

Tony, I just bought a used starcraft pop-up truck camper. You should be looking at pop-up truck campers for your Tundra. I also drive a 2007 Tundra Dbl cab 4wd 5.7L. My camper's dryweight is 1500lbs, wet is 1700+. This puts it right at the Max GVWR for the Tundra. To my knowledge which is limited, No amount of airbags, leaf springs etc. will allow you to carry more then the manufacturer GVWR legally. My Tundra carried this camper home from the prior owners, a trip of 240 miles, like it was custom made for the truck. I couldn't even tell I was hauling it.
Just a heads up.

Palomino & Northstar make nice pop-up TC's as well with the Palomino being less expensive at around $10,000 new nicely optioned. Regarding payload, remember there are other systems that are sized to your truck like brakes, tires, rims, drive train, etc. that can all fail if over loaded. Suspension is not the only system to be concerned about. Air bags, Rancho's, sway bars will help with handling but won't increase your GVWR.

While air bags, extra leaf springs, or whatever may help with the ride, there is no way you can increase the payload rating.