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Continental 28" S42 RE 32-622–47-622 inner tube is a bicycle tube designed for 28-inch wheels with 32–47 mm wide tyres, providing reliable air retention and a Presta valve.
Key Features
Construction and Design
The tube is made from butyl rubber, which holds air well and is suitable for regular everyday use. The elastic material allows the tube to adapt to the inner shape of the tyre and maintain stable pressure.
The S42 marking refers to a 42 mm Presta valve, commonly used on road, gravel, trekking and hybrid bicycles. The 32–47 mm tyre width range allows the tube to be used with various 28" tyres.
Main Functions
The tube helps maintain the correct air pressure in the tyre and supports smooth bicycle rolling. When installed correctly, it reduces the risk of air loss and helps the tyre perform consistently on daily rides and longer routes.
The Presta valve is narrower than an automotive-style valve, making it suitable for rims with a smaller valve hole. The 42 mm length works well with most standard-profile 28-inch rims.
Use and Compatibility
The tube is designed for 28" wheels with 622 mm rim diameter and 32–47 mm wide tyres. It fits tyres with ETRTO markings from 32-622 to 47-622, so the tyre sidewall size should be checked before installation.
This model can be used on trekking, gravel, city, hybrid and some road bikes with wider tyres. During installation, it is important to make sure the rim is compatible with a Presta valve and that the tube is not twisted or pinched between the tyre and rim.
Additional Features
The butyl construction requires little maintenance and is well suited for everyday use. The tube can be used as a spare on rides or as a replacement for a worn or punctured tube.
Its compact packaging makes it easy to carry in a bicycle bag, backpack or repair kit. When correctly selected and inflated to the pressure recommended by the tyre manufacturer, the tube helps maintain reliable tyre performance in different riding conditions.
Summary
Continental 28" S42 RE 32-622–47-622 inner tube is made for 28-inch bicycles with 32–47 mm wide tyres and rims designed for a Presta valve. It is best suited for trekking, gravel, city and hybrid bikes that need a reliable butyl tube, good air retention and broad compatibility with 622 mm wheel tyres.
