Department Of Transportation Uniform Tire Quality Grades; Treadwear - Fiat Abarth 500 2015 Owner's Manual

problems the first time, using step-by-step troubleshoot-
ing and drivability procedures, proven diagnostic tests
and a complete list of all tools and equipment.
Owner's Manuals
These Owner's Manuals have been prepared with the
assistance of service and engineering specialists to ac-
quaint you with specific FCA USA LLC vehicles. In-
cluded are starting, operating, emergency and mainte-
nance procedures as well as specifications, capabilities
and safety tips.
• Call toll free at:
1-800-890-4038 (U.S.)
1-800-387-1143 (Canada)
Or
• Visit us on the Worldwide Web at:
www.techauthority.com
IF YOU NEED CONSUMER ASSISTANCE 401
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following tire grading categories were established by
the National Highway Traffic Safety Administration. The
specific grade rating assigned by the tire's manufacturer
in each category is shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must conform to Federal
safety requirements in addition to these grades.

Treadwear

The Treadwear grade is a comparative rating, based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course. For
example, a tire graded 150 would wear one and one-half
times as well on the government course as a tire graded
100. The relative performance of tires depends upon the
actual conditions of their use, however, and may depart
9