IIRC I had 12.50/35 X16.5 (Big O brand) on my 90 F250HD 4X4. We had a stock trailer that used them too but, I think they were 8.5s highway tread. Here's some...
https://www.amazon.com/s?keywords=Light+Truck+&+SUV+Tires&rh=p_n_feature_five_browse-bin:10467178011&c=ts&ts_id=10350133011
https://www.amazon.com/s?keywords=Light+Truck+&+SUV+Tires&rh=p_n_feature_five_browse-bin:10467178011&c=ts&ts_id=10350133011