If you are going to try the air chisel be Shure to use a dull bit, my bit is 1 1/2 wide and I polish it with a lapping wheel to make it slide in and back out with the soap , rotating the tire a inch at a time. I lay on my side in the driveway to do that job and is hard for me to swing the slide hammer because it is for large truck tires . I do things different at 70 then I did at 50 ,steam cabinet , heat pad and naps . I have noticed some of the newer mowers have a 10 inch wide by the distance around the tire piece of indoor outdoor carpet laid in them before the tube install, poor man version of puncture proof tire .