No .. the tyre footprint is a bit conceptual but, if one could do the relevant integration, the answer would be very close to precisely correct. You can't have some of the weight magically disappear ... although, following the fanciful boat solution, one could allow just a teensy bit of weight to be balanced by atmospheric hydrostatic forces integrated over the hull ... a la airships ... and, even then, one would need to consider the air inside the ship and whether that had any difference in pressure/mass to the air outside at the same RLs.
However, given that the normal weighing process is bedevilled by a range of errors ... we probably can ignore such minor considerations ...