for a great feeling tyre you should get something thicker, 26 x 2.5 is the general thickness for a trials rear tyre, also you should consider the conditions you will be riding in, if you want to ride street then a small block tred would work great, if you still want to ride in town/city centers then a larger block tyre is good for them conditions. If you want to ride in muddy conditions then tryall tyres are what you want. i use tryall sticky tyres on mine, the grip is great.. they havn't slipped yet in any condition so i guess that makes it a fairly good tyre... i hope this helped a bit... and hope it makes a bit of sense happy riding