Updated: 08/11/2018. Most bicycles, except some tubeless models, use tubes in their tyres. Tubes are used to hold the air in, of course, while the (outer) tyre is responsible for firmness and grip with surface. This post will explain important things concerning bicycle tubes, including: dimensions (sizes), valve types (schrader, presta, dunlop…), valve lengths etc. … Read more Bicycle tubes – valve and tube types explained
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