Two strategies are used to attempt to improve the sturdiness of tubes. First, it’s possible you’ll discover a rim strip (additionally known as a tire liner) designed to forestall the wheel rim sporting on the tube. Second are tubes prefilled with some form of sealant. Regardless of the apparent advantages, there are drawbacks that restrict their reputation. They’re usually dearer, they’ll make set up harder, they usually add weight. None of those are an issue for riders who use their bikes totally on the highway, with occasional off-road journeys on the weekend, however they are often for enthusiastic riders and execs who particularly don’t need that additional weight.