I don't know, Dan. A couple of layers of innertube glued together work really well and inner tube rubber lasts a long time. If you mean the inner tube flap that sits atop the wheel (between the wheel and the tube), that's usually thinner, isn't it? I normally hunt for truck tubes since they're heavier weight.


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end