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Missouri Class F Written Test Practice
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Vehicle Safety, Documents & TowingStandalone practice
You do the penny test on your tires, placing Lincoln's head down into the grooves. Which result shows the tread is still deep enough?
Correct answer: Part of Lincoln's head is covered by the tread
Why
Check the tread once a month and before a long trip. Worn tread grips poorly in rain and snow and makes hydroplaning more likely. Also check tire pressure with a gauge and compare it with the number in the owner's manual or on the driver's door jamb.
Verified against Missouri Driver Guide · Tire Pressure · p. 62
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