Hello HereSince1628 primitive,
DUmp Heloise here! What a tricky problem, but an easy fix! You simply want to make sure that gravity is acting as a constant on the entire surface of the tire.
First, we need to get your Escort's transmission into diagnostic mode. To find the diagnostic mode, move your shifter knob until it is lined up with 'D', for, you guessed it, 'diagnostic'. Then, and this is the important part, stick your head on the pavement, and align it with the contact patch of the tire.
Now, have your friend mash the gas pedal. You will be able to tell pretty quickly if gravity is acting as a constant on your whole tire.
~Dump Heloise