Unpredictable spring performance can result in disqualification after the ride height has been measured.
Poor quality springs can loose free length and then seem to stabilize. The problem that can arise is that the performance of the springs is unpredictable. For such springs, this means that it is impossible to know with any degree of certainty what is the free length / installed height at a specific moment of time. This could result in disqualification when the ride height is inspected by technical officials.
The good news is that it is possible to avoid the worry of this problem. Hypercoils are designed and manufactured to maintain their free length and installed height for life. See Hyperco warranty for complete details.