Technical Standards EUWA ES-3.07 First Harmonic Measurements and Marking for Motor Vehicle Wheels.

This EUWA specification covers 1st harmonic measurements of radial run-out
for wheels for passenger cars and trucks.

It is the experience of EUWA Members that if vibrational problems encountered on
motor vehicles have for origin a wheel radial run-out anomaly, then the amplitude of
the vibration is proportional to the 1st harmonic of the average radial run-out of the
bead seats.
It is therefore EUWA a recommendation that the wheel uniformity
measurements be based .on the 1st harmonic of the average radial run-out of
both bead seats.

EUWA ES-3.07 First Harmonic Measurements and Marking for Motor Vehicle Wheels.