unsprung

/ʌnˈsprʌŋ/
adjective
  1. Not equipped with springs, especially referring to a vehicle's suspension system.
    • The old cart had unsprung wheels, making the ride very bumpy.
    • The trailer's unsprung axle caused the load to bounce around on rough roads.
    • Unsprung weight in a car includes parts like the wheels and tires that are not supported by the suspension.
Synonyms
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