Wikia

BW or Blackwall is a line of Hot Wheels Wheel Types.

Image	Letter Code	Type	Years Used	Notes
	BW	Basic Wheel/Black Wall	1977- Present	Used on all cars from 1978-1980.(except wisconsin toy company promo).They were then used once again for the 2011 The Hot Ones Series, though the 2011 design is quite different from the old design.
	BBW	Black Black Wall		Used on vehicles such as Combat Medic
	WBW	White Black Wall	1990-	Used on vehicles such as Homer's Nuclear Waste Van
	YBW	Yellow Black Wall	1990-	Used on vehicles such as the 1990 California Customs '40's Woodie
	WW	White Wall	1983-present	Same hub as BW and RL Type 2

BW