Why a Pre-Inspection Check Matters
A thorough pre-inspection check can identify issues you can fix yourself for a fraction of the cost of a failed inspection and re-test. The average Pennsylvania driver can resolve 40-50% of common inspection failures with basic tools and minimal expense.
1. Lighting Systems (Most Common Failure Point)
Lighting issues are the number one cause of PA inspection failures, but they're also the easiest to check and fix yourself.
Headlights
- Both low and high beams: Turn on headlights, engage high beams, check both work
- Proper aim: Should point slightly down and right, not into oncoming traffic
- Lens clarity: No major cracks or excessive yellowing
Turn Signals and Hazards
- Front turn signals (amber or white)
- Rear turn signals (amber or red)
- Side markers (if equipped)
- Hazard lights function on all corners
Brake Lights
- All brake lights illuminate when pedal pressed
- Center high-mount brake light (if equipped from factory)
- No bulbs out or dim from age
Other Required Lights
- Reverse lights: White, illuminate when in reverse
- License plate light: Illuminates rear plate
- Parking lights: Function independently or with headlights
2. Tires and Wheels
Tire issues are the second most common inspection failure in Pennsylvania.
Tread Depth (Legal Minimum: 2/32")
Pennsylvania requires at least 2/32" tread depth across the center three-quarters of the tire. Use the penny test:
- Insert penny into tread with Lincoln's head upside down
- If you see all of Lincoln's head, tread is too shallow
- Check multiple locations around each tire
Overall Tire Condition
- No sidewall damage: Bulges, cuts, or exposed cords
- No uneven wear: May indicate alignment or suspension issues
- Proper inflation: Check door jamb sticker for PSI
3. Windshield, Wipers, and Glass
- Cracks: No cracks longer than 11 inches
- Driver's view: No damage directly in driver's line of sight
- Rubber not torn, cracked, or missing chunks
- Washer fluid sprays onto windshield
4. Braking System
- Firm pedal with consistent resistance
- No spongy feeling (air in lines)
- Vehicle stops straight without pulling
- Parking brake holds vehicle on incline
5. Steering and Suspension
- No excessive play in steering wheel (more than 2 inches)
- Steering wheel returns to center after turns
- No visible leaking from shocks or struts
6. Horn and Safety Equipment
- Horn operates when button pressed
- All seat belts present and operational
- Buckles latch securely
7. Exhaust System and Emissions
- No visible exhaust leaks or holes
- Check engine light is OFF
- Gas cap tightens with audible clicks