Its a difficult one because I do so much road mileage in the truck but want a bit more grunt when im going round fields.
I dont do any challenging terrain and limit myself in winter months when the ground is sodden.
I just have 100% road tyres at the moment and they spin all over the place in a wet field.
But I cannot give up decent road traction for off road capability as my driving is so skewed to the former.
Road tyres will always be useless on a wet grass field, most all tyres will spin on a wet grass field unless you you get the gearing and speed right. Take a good long look at either AT tyres or mud and snow symbol carrying tyres. I used winter mud and snow tyres for over 10 years whilst living on mainland Europe and never had any problems on or off road driving an old ford maverick. Now I drive an old Freelander with currently the tyres that came with it, they are a 4x4 tyre but not good on wet grass (surprise!). I will revert to winter mud and snow tyres soon when these are finished.