Fresh 27+ 27 Inch Bicycle Tires
Fresh 27+ 27 Inch Bicycle Tires. Traditional 630 mm (27 inch) rims were straight side design, but in the late '70s they evolved to a hook edge design which would permit the use of higher pressures. How to patch a bicycle inner tube. Bicycle commuters and avid cyclists will agree that the last thing you want on a long bike ride is a while there are tubeless tires out there, these structures are an essential part of most bicycles while you can find a variety of bikes with wheel sizes ranging from 16 to 27.