Ford Mustang Owner's Manual page 212

Maintenance and Specifications
Note: If your tires show uneven wear ask a qualified
technician at a reputable repair facility to check for
and correct any wheel misalignment, tire imbalance
or mechanical problem involved before tire rotation.
Tire wear
Measure and inspect the tire tread on all your tires
periodically. Advanced and unusual tire wear can
reduce the ability of tread to grip the road in
adverse (wet, snowy, etc.) conditions. Visually check
your tires for uneven wear, looking for high and low
areas or unusually smooth areas. Also check for
signs of tire damage.
When the tread is worn
down to 4 mm (1/16th
of an inch), tires must
be replaced to prevent
your vehicle from
skidding and
hydroplaning. Built-in treadwear indicators, or "wear
bars", which look like narrow strips of smooth
rubber across the tread will appear on the tire when
the tread is worn down to 4mm (1/16th of an inch).
When you see these "wear bars", the tire is worn out
and should be replaced.
Inspect your tires frequently for any of the following
conditions and replace them if one or more of the
following conditions exist:
• Fabric showing through the tire rubber
• Bulges in the tread or sidewalls
• Cracks or cuts on the sidewalls
• Cracks in the tread groove
• Impact damage resulting from use
• Separation in the tread
• Separation in the sidewall
• Severe abrasion on the sidewall
If your vehicle has a leak in the exhaust system, a
road tire or the spare tire may be exposed to hot
exhaust temperatures requiring the tire to be
replaced.
212
2004 Mustang (mus)
Owners Guide (post-2002-fmt)
USA English (fus)