8 articles
Most cars need 32-35 PSI and SUVs 35-40 PSI. Tire pressure changes 1 PSI for every 10°F temperature change. Learn the right pressures for your vehicle and how TPMS works.
Use the penny test (2/32 inch) and quarter test (4/32 inch) to measure tread depth at home. Learn the legal minimums in the US, EU, UK, and Australia before your tires become unsafe.
Rotate your tires every 5,000-8,000 miles using the correct pattern for your drivetrain. Forward cross, rearward cross, and X-pattern explained. Directional tire rules included.
Winter tires use a softer compound that stays flexible below 7°C (45°F). Summer tires harden in cold weather. All-seasons compromise across all temperatures. Real data on when to switch.
Center wear means overinflation. Edge wear means underinflation. Cupping indicates bad shocks. Learn to read 7 common tire wear patterns and fix the underlying issue.
Every number and letter on your tire sidewall has a precise meaning. Learn to decode size (225/45R17 91V), DOT date codes, load index, speed ratings, and UTQG grades.
Uneven tire wear, steering wheel vibration, and pulling to one side are classic alignment symptoms. Front-end alignment costs $75-150; four-wheel alignment $120-200. Diagnose the signs before your tires are ruined.
Replace tires at 4/32 tread depth for safety, and never run tires older than 6 years regardless of tread remaining. Expect to pay $400-$1,200 for a quality set of four tires.