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TIRE CONDITIONS

Causes and Corrections

Tread Wear - In Center

Probable Cause

  • Tires overinflated
  • Use of oversized tires

Appropriate Correction

  • Confirm cold inflation pressure matches vehicle's recommended pressures
  • Confirm appropriate rim width and evaluate alternate tire pressures
Tire with Center Wear

Tread Wear - On Both Shoulders

Probable Cause

  • Tires underinflated
  • Vehicle overloaded

Appropriate Correction

  • Confirm cold inflation pressure matches vehicle's recommended pressures
  • Confirm load being carried is within vehicle specifications, reduce as necessary
Tire with Wear On Both Shoulders

Tread Wear - On One Shoulder

Probable Cause

  • Wheel alignment does not match actual driving conditions
  • Worn or damaged steering/suspensions parts

Appropriate Correction

  • Set alignment to most appropriate angles withing vehicle's approved range
  • Replace worn or bent parts and align
Tire with Wear On One Shoulder

Tread Wear - Heel and Toe Block Wear

Probable Cause

  • Insufficient tire rotation for driving conditions
  • Tires underinflated, increasing drag and wear

Appropriate Correction

  • Rotate tires more frequently following vehicle's approved pattern
  • Confirm cold inflation pressure matches vehicle's recommended pressures
Tire with Heel and Toe Block Wear

Tread Wear - Irregular Cupping

Probable Cause

  • Loose steering or suspension components
  • Tires and wheels out of balance

Appropriate Correction

  • Replace worn struts/shocks and other steering/suspension parts and align
  • Correct balance of tires and wheels
Tire with Irregular Cupping

Circumferential Split/Star

Probable Cause

  • Impact break from road hazard or pothole
  • Tire sidewall pinched between road and wheel

Appropriate Correction

  • Dismount tire and inspect for interior damage, replace tire if damage is found
  • Determine if wheel is bent by inspecting for runout, replace wheel if damage is found
Tire with Circumferential Split/Star

Bubble/Bulge

Probable Cause

  • Tire sidewall pinched between road and wheel
  • Components contaminated during manufacturing

Appropriate Correction

  • Dismount tire and inspect, tire manufacturer's warranty applies if no interior damage is found
  • Dismount tire and inspect, interior damage indicates road hazard
Tire with Bubble/Bulge

Ozone/Weather Cracking

Probable Cause

  • Frequent exposure to direct sun and hot temperatures
  • Tires exposed to ozone or harsh chemicals

Appropriate Correction

  • Evaluate service conditions and attempt to minimize exposure to sun and heat
  • Attempt to keep tires away from sources of ozone and chemical exposure
Tire with Ozone/Weather Cracking

Abrasions of Both Sidewalls

Probable Cause

  • Driven on when extremely low on air
  • Driven on when flat

Appropriate Correction

  • Dismount and inspect tire for interior damage, replace tire if damage is found
Tire with Abrasions of Both Sidewalls