I'd like some input on tubes: what would be the best source/manufacturer for tubes for 7.00-20 bias tires? I would like them to be radial type and American made, but I'm probably dreaming. They need to have the long bent type valves. My quick online checking shows that there may still be (?) some US-made radial tubes in the 7.50-20 size, but I would assume that it would not be advised to use a larger tube. I've had bad luck with 'modern' bias tubes. I'd sooner put a good used bias tube made in 1950 in one of my tires than most of them made now. Your thoughts and advice appreciated!
