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ASVAB · Brakes and Suspension

What is the main purpose of a vehicle's suspension system (shocks and struts)?

Reviewed by Jordan Morley, Editorial Lead at 247SimpleTests. Written by the 247SimpleTests Editorial Team from the official source material cited on every question.

Correct answer

To absorb road bumps and keep the tires in contact with the road for a smooth, controlled ride

  1. A To store fuel
  2. B To power the wheels
  3. C To steer the vehicle by itself
  4. D To absorb road bumps and keep the tires in contact with the road for a smooth, controlled ride

Why this is the answer

The suspension system — including springs, shock absorbers, and struts — absorbs bumps and vibrations from the road, cushions the ride, and keeps the tires in firm contact with the road surface for traction, handling, and braking. Shock absorbers (shocks) dampen the bouncing of the springs, while struts combine a shock with a structural support. Worn shocks cause excessive bouncing, longer stopping distances, and uneven tire wear. The suspension's job of smoothing the ride and maintaining tire contact is a standard topic on the brakes-and-suspension portion.
Source: ASVAB Auto Information — Suspension

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About this topic: Brakes and Suspension

Brakes and suspension questions cover disc versus drum brakes, the hydraulic principle behind the pedal, ABS, and the shocks, struts and springs that keep the tyres on the road. Expect questions on symptoms such as pulling, pulsing or bouncing. This is one of 10 Auto Information questions on brakes and suspension, each with a full explanation on a single study page.

New to this exam? Our ASVAB exam guide explains the format, scoring, and how to prepare.

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