Green’s Dictionary of Slang

Dunlop tyre n.

[rhy. sl.]

a liar.

1960		J. Franklyn Dict. of Rhy. Sl.
1969		S.T. Kendall Up the Frog 13: Shut yer North ’n’ South – yer a Dunlop tyre.
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.