In contemporary automobile suspension systems, variable-rate coil springs are frequently utilized in lieu of conventional coil springs.
Variable-rate springs feature differing coil spacing, incorporating tightly wound coils at one extremity and wider coils at the opposite.
This configuration results in an escalating spring rate as compression increases.
The less rigid portion effectively absorbs minor impacts, ensuring a smooth ride.
For significant impacts or uneven surfaces, the more rigid section activates, inhibiting bottoming out.
This dual-rate characteristic enhances ride comfort and vehicle control relative to standard springs.
Terms such as "normal," "compact," or "soft" do not inherently describe this variable rate functionality.
Consequently, the appropriate designation is variable-rate.