dub n. an automobile wheel measuring twenty inches in diameter. (source: Double-Tongued Dictionary)
dub n.— «“I was wondering how my c5 would look with 20″ wheels on the back and 19″ on the front (as appose to 18 in back and 17 in front)” “You’re gonna put your vette on dubs, huh? Cool.”» —“Re: Bigger...
dub n.— «I have Good Year Ultra Grip 400, with dubs, as my winter-wheels. Good tires, but i’m not sure you can get these in the US.» —“SV: E300D Mysterious Dash Light, etc.” by Hans Marius S. Mastermo Usenet: alt.auto...
dub n.— «Dub, a niche car magazine,…took its name from street slang for 20—as in a double-dime bag of marijuana—because when it was founded most oversize wheels were 20 inches in diameter… G.M. became the first big carmaker...