Hi Mike, I have a couple of old 31" tyres here he can have, but I would have at a guess that he is into training for Wood Chopping events , and I would think that an old cross ply 4x4 or light truck tyre may be better suited as there won't be so much collapse in the side walls when he belts F--k out of it. Any tyre shop will have tyres they will gladly get rid of.
Hey thanks Smokey (and the others who offered advice), I am the friend in question and I reckon they sound like they might be OK if I can grab 1 off you.
No real method to my madness Skid, just adding some variety to a training circuit.