Griffon Tire Sizes

[one bad wheel]

I figure it's time to replace the 50 year old rubber on my Griffon. The tires I want to replace are Dunlop Sports, and the sizes are 4.00 - 18.0 and 3.00 - 21.0. Does Dunlop make a similar type tire? Does anyone have any recommendations? Dunlop D952 looks about similar, but I'm not sure about the sizes they list.

[tony]

I always use TKC 80 tyres on all my Greeves. Good on and off road and in the wet. Used on most large adventure bikes

[one bad wheel]

Thanks for the reply. Those look pretty good but I'm looking for something more knobby. This bike will likely never see pavement.