When I was looking at tires the 7.50's were expensive. I think Coker was about the only source that I found at that time. I ended up going with the 8.25-20's and haven't had a problem with them. Good luck and keep us posted as to what you find, I have another one about due for tires. I would like to put the 7.50's on the front of the truck that doesn't have power steering,
Scott