Lightweight, sporty wheels made of magnesium. The term mag is often applied to aluminum and aluminum and steel combination wheels. Also see alloy wheels.
A motor-vehicle wheel made from lightweight magnesium steel, typically having a pattern of holes or spokes around the hub
Alloy wheels (incorrectly known as rims) are automobile (car, motorcycle and truck) wheels which are made from an alloy of aluminium or magnesium (or sometimes a mixture of both). They are typically lighter for the same strength and provide better heat conduction and improved cosmetic appearance.
(Mag Wheels) Some high-performance automobiles have wheels made of cast magnesium, commonly known as "mag wheels" for short.
a low-lying region in central France
center: move into the center; "That vase in the picture is not centered"
concentrate: direct one's attention on something; "Please focus on your studies and not on your hobbies"
NYC from Rockefeller Center November 2011
Evening shot looking north from the top of Rockefeller Center, late November, 2011.