The diffrence in tyres is massive, we went out and Kawak couldn't get up a hill, I towed him up in mine even if he did still have his hand brake on, ( he might be along soon to say that happens cause I had my cb radio set to eu and could hear any one)
I have insa turbo special tracks he had general grabbers then,
If you going laning you shouldn't need a aggressive tyre, a good all terrain would suit it best and would work ok to pull a horse box from a field.
Paul has these the general grabber at and at2 set would be good 245/75/16 slighty widervthan 235/85 buf about 1.5" smaller hight wise and on wheel, he's up moortown way I think ls17
http://www.landyzone.co.uk/lz/f62/2-sets-wheels-tyres-215551.html