I did not want to buy tires also, but my big kubota rear loaded tire receive a nail about 12 years ago and the shop just plug it as there was no tubes in it. 2 years ago it starting leaking past the plug and I ran anyway as it was not to bad. it holds 61 gallons of fluid in each tire and I was holding off from having a tire shop come out for the repair. [$650.00 - $800.00 for the trip] so for 2 years I was adding air every now and then, so I bit the bullet. new tires , tubes and new rims , ouch. I do not want to do this for another 22 years, that is what I got out of my titans. I also went from 8 ply to a 12 ply tire.