The diaphragm mass is determined with the compliance of the suspension in mind so that the desired low frequency resonance is achieved.

膈肌大众决心与遵守暂停记住，这样理想的低频共振的实现。

youdao

The 500C doesn't have a very tenacious grip on the road 15-inch tires will do that and the same suspension compliance that allows the car to negotiate ugly potholes makes the car pretty spongy in corners.

WSJ: 2012 Fiat 500C Cabrio Review: A Car That Can't Fail��Not for Lack of Trying | Rumble Seat by Dan Neil