Diagonal Wear

Diagonal wear occurs diagonally across the tread area and around the circumference of the tire. To determine whether tires have this type of wear, visually inspect the tires to determine if the wear pattern runs diagonally across the tread and around the circumference of the tire. In some instances, the difference in tread depth along the diagonal wear pattern may need to be measured.

Fig 1: View Of Diagonal Wear

Courtesy of FORD MOTOR CO.

NOTE: For suspension system and additional alignment diagnosis, REFER to SUSPENSION SYSTEM - GENERAL INFORMATION .

TIRE WEAR REFERENCE CHART

Condition	Possible Sources	Actions
Inner edge/shoulder wear	Excessive toe out and/or negative camber Incorrect wheel and tire assembly rotation intervals High-speed cornering	REFER to Diagnostic Routine A: Inner Edge, Shoulder Wear .
Outer edge/shoulder wear	Excessive toe in and/or positive camber Incorrect wheel and tire assembly rotation intervals High-speed cornering	REFER to Diagnostic Routine B: Outer Edge, Shoulder Wear .
Heel/toe wear	Excessive toe in/out Incorrect wheel and tire assembly rotation intervals	ROTATE the wheel and tire assemblies. CHECK the alignment, ADJUST as necessary.
Diagonal wear	Excessive toe in/out Incorrect tire rotation intervals	REFER to Diagnostic Routine C: Diagonal Wear .
Diagonal wear	Loose, worn or damaged suspension components	REFER to SUSPENSION SYSTEM - GENERAL INFORMATION .