Originally Posted by
rsbob
Can’t say I have. Really don;t understand about what the ‘inner layer’ is referring to. I run two bikes tubeless and and all there is is the rim, rim tape, sealant and tire. There is no inner layer. Pictures would help
Some tires do have an inner, airtight layer; these can be run without sealant, if one should so desire. I think that these are kind of going away, though, as most people pop in sealant, at the point of installing the tires, as a matter of course.