The pressure on the contact patch multiplied by the area of the contact patch is equal to the weight on the wheel. This is Newton's Third Law. It is a basic law of the universe. It is true for bike tires, for car tires, for train wheels, for wagon wheels, for the tires on a 747, and for the wheels on a rickshaw. It is true whether the tire is made from rubber, or steel, or marshmallows, or granite, or unobtanium. It is true on Earth, it is true on the moon, it is true in orbit, it is true on Jupiter, and it is true in the Andromeda galaxy.

Anybody who claims to have measured differently either measured wrong, or doesn't understand his measurements. I suggest a $1000 HDMI cable to go with those magic tires.