Tires 12.5/80-18 Tube

[Surgeon]

Anyone have an idea where to find a tire inner tube for an R4 12.5/80-18? You would not think it would be that hard but I have struck out so far.

 

[pmsmechanic]

A front tractor tire tube should work. You won't find one for a 12.5 but they stretch. Just don't get a tube a rim size larger. You'l get folds in the tube.