Sierra Off Road Styled Wheels by Black Rhino. The Sierra is a thick & aggressive multi-spoke style. The SIERRA takes its name from the vast mountain range spanning the California and Nevada border. Each spoke on the SIERRA emulates the peaks and valleys of the rugged granite mountains. Like its name SIERRA; which also translates to “saw’ in Spanish, each spoke has a tough hard cut milled section that wraps the inner part of each spoke.