I’ve driven two EX’s from two different dealerships, and having owned HD tow vehicles, I’ve gotten in the habit of checking payload ratings. Both EX’s had a payload rating of 1323 lbs. That’s not bad considering most Tundras are about the same, and my 2016 TRD Pro was 1130. The payload can be found on the drivers side B pillar. Look closely on the decal that shows tire pressures. FYI: if you tow 5K, then the tongue weight of 500 lbs. (10% of TT weight) is subtracted from payload rating. The difference is how much weight can be placed in, or on, the vehicle.