When I ordered my back tire I told the desk jockey I needed a Tube Type Pirelli MT66. He replied any tire can have a tube installed if neccessary. I got the tire today and on the sidewall it says "Tubeless. On tube type rim fit a tube." Does this mean it will work with a tube? I now it probably seems like a dumb question, but I just want to be sure. This is the first street bike I've ever purchased tires for.