Figure 18.
Wear rates for the initial 200 m, 200 to 1000 m and overall sliding distance of each composition.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.