During a routine vehicle safety inspection, a driver checks the condition of their tires t… — DMV Permit Practice Test

During a routine vehicle safety inspection, a driver checks the condition of their tires to ensure the vehicle is legally safe to operate on public roads. What is the minimum legally required tire tread depth for passenger car tires?

$2/32$ of an inch across the main tread groovesAnswer
B
$1/32$ of an inch, provided the tire holds air pressure
C
$6/32$ of an inch for all passenger vehicles
D
$0/32$ of an inch, as long as the internal steel belts are not exposed

Answer

2/32

of an inch across the main tread grooves

The standard minimum legal tire tread depth for passenger vehicles is

2/32

of an inch. Drivers can test this using the top of Lincoln's head on a penny.

Step-by-Step Solution

Identify mandatory equipment standards for vehicle tires

Motor vehicle safety inspections require tires to maintain sufficient tread depth to channel water away and maintain road grip.

Operating a vehicle with worn tread below legal thresholds increases stopping distances and hydroplaning risk.

Apply the standard legal inspection threshold

The minimum legal tread depth requirement for passenger car tires is

2/32

of an inch.

Tires worn to

2/32

of an inch or less are considered legally unsafe and fail vehicle inspections.

Key Concept

Minimum Legal Tire Tread Depth

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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