Use something like this http://www.agscompany.com/lubricants/canadian/213 to lubricate it. Lay the wheel down flat and let it penetrate. Also you need a large hammer. http://www.alltiresupply.com/p-TG11E.html Also, you need a hammer like this. I used this method from the 1950's until the mid 70's when tubeless tires became popular. I have never had to use a sawzall or anything like that. The tools may seem expensive, but we still have a 50 year old Ken Tool duckbill hammer at the shop that we use on stubborn ones. Have you priced a tire lately to see what you will ruin by by sawing it. If you are in a farming area, there is probably a tire shop that changes farm tires and they can knock it down.