What do the numbers on an inner tube mean?
The size is written on the side of the tire.Inner tubes state the wheel diameter and width range for which they will work.The tube is intended to fit a 26 inch tire with a width of between 1.95 inches and 2.125 inches.
Can I use a smaller inner tube?If you don't go more than one size smaller or the differential is not too extreme, you can.A 1.5 is fine.The flats are likely to have issues with a 1.25 in a 2.25.Tubes will be in your LBS.
The size of your bicycle tire is 700x38c.The tire's nominal diameter is 700.If you were looking at your bike from the front, the tire width would be 38.The old French system of classifying wheels is referred to as C.
Your width measurement does not need to be exact.The inner tubes come in a range of sizes.One of our most popular tubes is the 26 x 1.75-2.125” which means it fits a 26 inch tire with a width in the range of 1.75 to 2.2125 inches.
The diameter x width of the tire is 700x25c.The size in two different systems is referred to asdecimal.Tubes should be bought as close to this size as possible.
A new inner tube is included in the price of a flat tire.$17 if the wheel is off the bike.Inner tubes cost $8.
The 700 25-28c tube will fit.You are good if your tire size fits in the range.These are equivalent to 700c and may be marked with 'ISO 622' or 'ETRTO 626'.You have to get a tube with the correct valve stem length.
It's very bad for latex to be exposed to heat and UV light, so where the tubes were stored could be a factor.Latex tubes are exposed to light, sun, UV and extreme temperatures.Tubes are 20 years old and still run great, so they have a long life when protected.
Presta valves are used on skinny road bike tires because they require a narrower hole in the rim.Presta valves adapt to higher pressure.Road bike tires can top out at 125 pounds.
It's perfectly safe to use a larger tube in a smaller tire.Bike messengers use it to reduce the chance of flats.Since you're using more tube, the wheel is slightly heavier.
Under the French system, 700x23c means the dimensions of your bike tire.The first number, 700, is the nominal diameter of the bike tire.The width of the bike tire is measured in millimeters.
700 is the diameter of the tire.This would be 29 inches.700c wheels are only found on road bikes.The tire's width is 32.
650B shares the same rim diameter as a 29er wheel, just like a 700C wheel.The bead seat diameter of the rims is 622mm.
Bike tire sizes are indicated with two numbers that correspond to the outside diameter and width of the tire.A standard road tire has a diameter of 700mm and a width of 23mm.The ISO number for a 700c tire is 622.