Wrong tire rating?

Having trouble with tires on my taco 2010 SR5 double cab long bed; they are 2 years old Cooper A/TW 245/75R16 on factory aluminum rims. These are rated 111S.

A quick google search shows this means 1090 kg / tire with a speed rating of 180 km/hr.

Looking at the placard on the side of my drivers door well, shows 1249 kg front and 1410 kg rear with aforementioned tire size at 30 psi cold.

Based on this, the tires I have been running aren't rated to carry the minimum load and I, nor the place I bought them from shouldn't be surprised that they have been losing air for the past two years...

Am I on the right track here or way out to lunch?

 

You don't have aluminum wheels, they are an alloy.

The load rating of the tire is per tire.

The placard numbers are the maximum weight per axle to carry, including vehicle, passengers and cargo.

https://www.safercar.gov/Vehicle-Shoppers/Tires-Rating/General-Information

'losing air' has nothing to do with any of this.

Enjoy your lunch while you are out!

 

Thanks!