Tread depth, tire pressure, rotation, alignment, sizing codes, and spare tires.
41 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the minimum legal tread depth?
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2/32 of an inch- How do you perform the penny test on tire tread?
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Insert a penny into the tread with Lincoln's head upside down. If you can see the top of his head, tread is too shallow.- Why is tread depth important?
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Tread helps grip the road and expels water to prevent hydroplaning in wet conditions.- At what tread depth should you replace your tires?
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When tread reaches 2/32 inch, or sooner if wear is uneven or you want better wet traction.- Where should you find the correct tire pressure for your vehicle?
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On a sticker inside the driver's door jamb, in the owner's manual, or sometimes on the fuel door.- Why is tire pressure higher when tires are warm?
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Tire pressure increases because air expands when heated by friction and driving.- What problems does overinflation cause?
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Reduced traction, uneven wear in the center of the tire, and a harder ride.- What problems does underinflation cause?
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Increased rolling resistance, uneven wear on the edges, poor fuel economy, and heat buildup.- How often should you check tire pressure?
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At least once a month and before long trips, ideally when tires are cold.- What is the main purpose of tire rotation?
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To promote even tread wear across all four tires and extend tire life.- What is the front-to-back tire rotation pattern?
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Front tires move straight back to the rear axle on the same side, rear tires move diagonally to the front.- What is the cross or X pattern tire rotation?
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Front-left goes to rear-right, front-right goes to rear-left, rear tires cross to the front opposite side.- How often should tires be rotated?
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Every 5,000 to 7,000 miles or every 6 months, whichever comes first.- When should you not rotate your tires?
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If tires have a unidirectional tread pattern or if directional tires are installed, rotation options are limited.- What is wheel alignment?
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The process of adjusting the angles at which tires contact the road to manufacturer specifications.
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