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South Carolina Class D Knowledge Test Practice
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Passing target: 80% (24/30)
Vehicle Safety, Documents & TowingStandalone practice
Before a morning drive, you check a cold tire with a gauge. It reads 38 PSI. The sticker on the driver's doorframe says 35 PSI. What should you do?
Correct answer: Let air out of the tire until the gauge reads 35 PSI
Why
Check tire pressure with a gauge every month. PSI means pounds per square inch. Press the gauge evenly onto the valve stem for an accurate reading, and add air when the reading is lower than the doorframe number. Crashes that come from poor tire care are preventable with these simple checks.
Verified against South Carolina Driver's Manual · Tire inspection · p. 44, 45
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