Max load capacity of tailgate

I tried searching but nothing usefull came up. How much weight can the tailgate of a double cab Tacoma hold? There will be a sportbike in the bed, but the back tire rests on the tailgate, I just don't want to over load the tailgate.

ive had three of my friends sitting on my tail gate before, it handeled it fine, they all weigh over 200 each

Loading the bike is the real question as at one point, the ramp, the bike, you and possibly even a friend will all be weighing on the tailgate. I have had no problems with my dirtbikes, but they are all approximately 150 pounds lighter than your sportbike. I think you are OK. If this common activity were a problem, we would have heard about it by now. Do be careful with the front of the bed. That sheetmetal is paper thin and bends waaaaaay easily. keep the weight off of it when you tie your bike down. I learned this on my buddies Tundra (sorry Mark) so my Tacoma is still pristine!

I load my HD V-rod in the bed of my '98. If you don't secure the rear of the bike the bouncing of the back tire will cause your tailgate to bow in the center and will also place a few pressure dents on the outside. Aside from a few minor dings my tailgate still works fine for towing my bike or keeping it closed.