A sensor calibration device and method of construction for a force
variation machine includes a circular plate having a test measurement
region defined thereon. The test measurement region has a
circumferentially extending inner track and a circumferentially extending
outer track, the outer track having a projection and a valley for
sidewall bulge and valley simulation formed therein and the inner track
having a first and a second step formed therein separating the inner
track into outward and inward inner track portions. A circumferentially
extending radial edge track is provided having a first and a second step
formed therein separating the edge track into outward and inward edge
track portions. The projection and valley on the outer track have a depth
equivalent to tire sidewall bulge and valley limits, respectively. The
first and second steps in the inner track have a depth equivalent to a
tire lateral run-out limit. The first and second steps in the edge track
have a depth equivalent to a radial run-out limit.