Gerber Gator Folding Knife, Serrated Edge
Tried many other options, this has served well.
The handle is no slip. The point goes through the tire to start.
The serrated edge does the cutting. Two hand lengths allow you to lift the tire away from the point of cut. The serrated edge will slice very easy not being pinched with each pull or you can saw ever so slightly as you go. Just keep the cut rim away from the blade as you cut. Twenty tires in the morning each day adds up. No wear and tear on you. Start with lower numbers and practice. You can fold muscles if you try to many and that can take months to right itself. So take it slow and work comfortably. The knife is around 30 bucks. Get a serrated blade sharpener, they are about 8 bucks. No metal confronted in the cut. The rim has a soft spot between the tread. That is where you push in with the point. After 25 yrs I am using the same knife. Its a keeper. Save your rims they are useful too. Stack them. You can grow in these as well. Will describe later. Wear leather cloves when handling tires. Treads can have metal popping out. The cuts are painful, like copper.
