Originally Posted by
I-Like-To-Bike
What is "obscure" about every size of 20", 26", 27" and 28" (700C) tubes sold in the U.S. except for the ultra thin types only found on road/racing bikes/wheels sold at pricey LBS?
Which sizes of common tubes are only available in Presta?
I wonder if he means the size the tube has on its box... for example there are tubes for 18mm -23mm tires and they usually have presta valves...