Tomcoe,
I did not look in to using tubless 20" wheels.
Be sure the dropped center will clear the brake drums, proably will if people can use 19.5" tubless ones without problems.
You can find all the measurements and part numbers online for the new wheels offered by Accuride. The are the only real supplier of new steel wheels for trucks. The plain rim can be bought without a center if you have to. Some of the more common big truck wheels are only about $120 or so new.
You may try a search of this site for Accuride, I think I have posted a link to their catalog.
Any more questions?
Grigg
Just my oppinion, but if you don't want to change to a different tire size then I would just use what you have with tubes. The work involved in making tubless 20" wheels with 10 lug on 7.25" is not worth the benifits to me.
But then I probably can't justify the switch to 9R22.5" tires either, they are the same overall diameter as the old 8.25X20" ones.
