Tire Conditions
Causes and Corrections
Keep your N-Spec Tires performing their best by maintaining your Tire Pressure, performing regular maintenance like Tire Rotations and 4 Wheel Alignments, and by keeping critical steering and suspension components in good working order. If your tires exhibit any of the conditions listed below, service may be needed and tires will likely need to be replace.
Tire 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
Tread Wear On Both Shoulders
Probable Cause
Tires under-inflated
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 Wear On One Shoulder
Probable Cause
Wheel alignment does match actual driving conditions
Worn or damaged steering/suspension parts
Appropriate Correction
Set alignment to most appropriate angles within vehicle's approved range
Replace worn or bent parts and align
Tread Wear Heel and Toe Block Wear
Probable Cause
Insufficient tire rotation for driving conditions
Tires under-inflated, increasing drag and wear
Appropriate Correction
Rotate tires more frequently following vehicle's approved pattern
Confirm cold inflation pressure matches vehicle's recommended pressures
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
Sidewall 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 run-out, replace wheel if damage is found
Sidewall 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
Sidewall 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
Sidewall Abrasion of Both Sidewalls
Probable Cause
Driven on when extremely low on air
Driven when flat
Appropriate Correction
Dismount and inspect tire for interior damage, replace tire if damage is found
