You can get ag tyres for them. They used to be relatively cheap. I think I just got them through my local dealer. When you ordered a Greenfield new you could choose from three different types of tyres. There were turf, general purpose and ag tyres on the order form.

Mine has the gp on it at present but I have a set of ag as well. The ag are better for grip but you have to be careful or they leave bald spots when you turn and can make a bit of a mess, especially if your topsoil is thin.

I’ve found I’m mostly better off with the diff locked on gp tyres and leaving the more treacherous stuff to do with the Deutcher. I leave that with the ag tyres on it. It’s not heavy enough to rip up the lawn unless I do the type of manoeuvre best left to much younger people.