What do the numbers on a inner tube mean?

The numbers refer to the dimensions of the tires that the tube is meant for. 700 is the wheel diameter in mm, and 28/38 means that the tube will fit tire widths from 28-38 mm. As far as I know, the dimensions used are the same that are printed on tires, so you can just look at your tire to know which tubes will fit.

What does 700x32c mean?

Here's the simple answer: At its most basic, a 700x32c tire is around 27 1/2 inches by 1 1/4 inches (or 1.26 inches).

What does 700 mean on bike tube?

The "700" refers to the rough outer diameter of the tire, although the actual outer diameter will vary greatly, depending on the type of tire and tread pattern. The "C" means NOTHING; it does not stand for "centimeters." Think about it--a 700-centimeter tire would be HUGE, over 21 feet tall!

How do I know what size inner tube I need?

Checking the Inner Tube Size You Need

The best way to check what size inner tube you need is to look on the sidewall of your tyre. Tyre manufacturers print the size on the sidewalls, so look out for numbers such as '700x23c' for a road bike, or '26x1. 75' which is for mountain bikes.

What size is 700c in inches?

All road and cyclocross bikes are built with 700c wheels, which are 29 inches. However, 700c wheels are designed to accommodate a thinner tire. Many come in widths ranging from 18 to 23 millimeters, with touring tires ranging from 25 to 28 millimeters.

How To Choose Inner Tubes - GCN's Guide To Road Bike Inner Tubes

What means 700x40c?

700x40c is the measurement of your bicycle tire and is sized according to what used to be known as the 'French system'. '700' is the nominal diameter of your tire, measured in millimeters. 'x' just means multiplied by. '40' is the second number and is the nominal tire width, also measure in millimeters.

IS 700c same as 29?

29" (ISO size 622) is actually the same rim diameter as 700C, although most 29" tires will not fit 700C road rims because they're too wide.

Is there a difference between 700 and 700c?

At one point in time, "700c" was a standard tire/rim size, where "c" indicated the bead seat diameter and "700" was the diameter, in millimeters, when the tire was installed and inflated. That "700c" tire size has a 622 millimeter bead seat diameter.

What does 700x37c mean?

700x38c is the size of your bicycle tire. 700 is the nominal diameter of the tire in millimeters. 38 is the width of the tire (as seen if you were looking at your bike from the front/back). C refers to the old French system of classifying wheels according to their Bead Seat Diameter.

What does 700x23 mean?

700x23c simply means the dimensions of your bike tire, under what's known as the 'French system'. The first number, 700, refers to the nominal diameter of the bike tire and is measured using millimeters. The second number, 23, is actually the width of the bike tire, again it's measured in millimeters.

IS 700C same as 28?

28”/700C/29er

The tyres can differ, but the 28”, 700C and 29er are all the exact same rim diameter. The 700 markings will be followed by the width in mm, and the 28 or 29 markings will be followed by the width in inches. This is the most common wheel size, so look out for familiar markings (such as 28x1.

What does 700x35c mean?

700x35c is the dimension of your bicycle tire, as measured using the 'French system'. Breaking this down, 700 is the nominal diameter of the bike tire in millimeters. The next number, 35, is the nominal width of the tire (again, this is measured in millimeters).

What size is a 700c inner tube?

Road wheels are usually '700c' sized (622mm in diameter, when measured from the bead seat to bead seat) and will need 700c tubes to match. These are sometimes referred to as 28in tubes, but that's relatively uncommon. Meanwhile, mountain bike and commuter bike wheels and tyres are typically sized in inches.

Is 27.5 the same as 700c?

That's changed over the past decade, so the majority of modern mountain bikes now come either with 29in or 27.5in wheels. These two sizes are equivalent to 700c and 650b wheel sizes expressed in the European ETRTO wheel size designations and have the same bead seat diameters.

Are 650 wheels faster than 700?

The lighter 650b wheel will accelerate faster Dov notes, whereas the bigger 700c wheel will maintain speed better because it's heavier. Dov adds that the 700c tyre will also roll a little bit faster because it has lower rolling resistance.

Whats bigger 29 or 700c?

29″ (ISO size 622) is the same inside diameter as 700C, but some 29″ tires will not fit 700C road rims because they're too wide.

How wide a tire on a 700c rim?

700c. A standard road tire is 700c x 23mm, indicating a tire diameter of approximately 700mm and a width of 23mm.

Can you fit 29 inch tire on 700c rim?

700c is the same rim bead-seat diameter ETRTO-622 and the same as road 28" and the same as MTB 29" (29er). So yes, you can fit 29" tyres on a 700c rim (of course, subject to the tyre and rim width compatibility What is the maximum or minimum tire width I can fit on my bicycle).

Which is faster 27.5 or 29er?

27.5 in. wheels have faster acceleration while 29ers are more efficient on longer rides. Smaller wheels accelerate faster than larger wheels. This is due mostly to where the weight of the wheel is distributed.

Which is bigger 700c or 27 inch?

The rim diameter of a 700c wheel is actually slightly smaller than that of a '27inch'. 700c bead diameter is 622mm whereas 27" bead diameter is 630mm.

What does 42c mean?

The c number, as in 42c is a marketing number, so it tells you what the manufacturer thinks you want to hear, which is probably going to be fairly accurate when interpreted as millimeters. Tires also have ISO numbers, and sometimes a tire will even list two widths, i.e. for the casing and the tread.

What is the difference between 700c and 622?

29″ / 700c (ISO 622 mm)

Here we have two more common wheel sizes that are in fact, exactly the same! The standard modern road bike wheel has an ISO diameter of 622 mm and is referred to as 700c (makes sense, right? /s).

What does 700c 30c mean?

In short - the 700x25C is a French nomenclature for tire size meaning tire diameter of 700mm and tire width 25mm and C is the width of the rim (A is very narrow, D is wide). Thus the number between "x" and "C" is the tire width in mm.