Section 04-04: Wheels and Tires | 1993 Mustang Workshop Manual |
The original equipment tires have built-in tread wear indicators to show
when tires need replacement. These indicators will appear as 12.7mm (1/2 inch)
wide bands when the tire tread depth becomes 1.6mm (1/16 inch). When the
indicators appear in two or more adjacent grooves, at three locations around
the tire, or when cord or fabric is exposed, tire replacement due to tread wear
is recommended. 