The 24" Duro Leopard tyre x3" is a great offroad tyre.
As supplied on the KH24 and Nimbus MUnis. The Duro Wildlife Leopard is a 3 inch wide tyre which will improve your offroad riding. The large volume lets you roll over bumps easily by absorbing some of the impact. Pretty soon you won't even notice a lot of the bumps you're riding over, as they're smoothed out so well by the Duro. It's like having suspension, only cheaper!
Note these tyresare w-i-d-e, so a wide frame is recommended, such as on 24" Nimbus II.
Duro Leopard is also available in 26" x 3".