7.50x17 are getting difficult to find. My 2500HD came with 17" tires. Once they get about 40k miles on them, I intend to use them on my one ton. Tire shops often have new takeoffs on hand. I recently bought one for $15 because there is just no demand for OEM 17" I ran a large bolt through a tie on my pickup when it had about 1,000 miles on it. They are not as tall as as 7.50, but I intend to replace the rears with a 3/4 ton third member which will give me all the speed I want. I will use a 16" tube in it because a 17" will fold. And 16" will stretch. Tire shops won't recommend this, but thats how we did it 50 or 60 years ago. Back in the day of tube required tires, folded tubes caused more flats than nails. Putting in a smaller tube fixes it.
