I have a 1960's JD 4010 that I use frequently in the woods or brushy areas. I do not use it for crops. Therefore, the front tires pick up a lot of thorns. I have been using tubeless tires so that I can plug the thorn holes on my own without having to remove a tube. I have been using 4 rib tires to give me as much thickness (4 ribs vs 3) as I can get, but I still get thorns in the areas between the ribs. I need a new set of tires 10.00-16 now, but I don't want to pay the cost to have them foam / no flat filled, as I don't plan to keep the tractor forever. I have read some comments about possibly using used airplane tires. Has anyone used them and if so what type of success have you had.