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The first number refers to the width of the tire, and the second number refers inner diameter of the tire. And finally there is also inch markings, which look like this; 28 x 1.40″. In this case, the first number refers to the outer diameter of the rim and the second number refers to the tire width.

## Are 28mm tires faster than 25mm?

Yes, they are still aerodynamically superior, but the rolling speed advantages outweigh this, certainly at the speeds of regular cyclists and even up to the speeds reached by keen amateurs, even professional cyclists are now running 25mm tubulars and sometimes 28mm for the Spring classics.

## How do road bike tire sizes work?

The first number is the diameter of your wheel. Sizes such as 26, 24, 20, 27.5, 29 and 700c are common tire diameters. The second number (after the X) is the width of your tire. The range for widths is usually between 1 and 3 inches.

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## Does tire size matter on a road bike?

Science has now proven that wider tires actually have less rolling resistance than skinnier tires. Wider road tires provide a more forgiving ride and improve handling through a, you guessed it, wider contact patch that makes endurance riding safer, easier, and more accessible.

## What does 700x23c 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.

## Can I replace 700×25 with 700×28?

Yes, more than likely a wheel that fits a 700x25c tire will fit a 28c tire.

## What is the best size tire for a road bike?

Most road bike frames can accommodate a tire as wide as about 28mm. Cyclocross and touring bikes are generally designed to accommodate wider tires. We recommend 23mm and 25mm wide tires for recreational road cyclists. The 25mm width is nice for long distance riding since it will provide a more comfortable ride.

## Is 622 the same as 700c?

The standard modern road bike wheel has an ISO diameter of 622 mm and is referred to as 700c (makes sense, right? /s). … While the diameter for both 29″ and 700c wheels is the same at 622mm, rims made for mountain bikes are generally wider to accommodate wider tires.

## Is a 28 inch tire the same as 700c?

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 28×1.

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## Is 27.5 the same as 700c?

Just as a 700C wheel is the same diameter as a 29” (29er) wheel, 650B shares the exact same rim diameter as 27.5”. … 27.5”/650B rims have a bead seat diameter of 584mm, and 29”/700C rims have a bead seat diameter of 622mm.

## Is a 29 inch wheel the same as 700C?

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. 29″ tires are popular with mountain bikers; search for 29″ MTB.

## Can 700C tire fit 27?

27-inch and 700C tires are close enough in size that the inner tubes are compatible; i.e. you can use a 27-inch inner tube in a 700C tire, and vice-versa. However, you can NOT use a 27-inch tire on a 700C wheel, and vice-versa.

## What size tires fit a 700C rim?

ETRTO have created a table that relates a given inner rim width to the recommended tire size for it. Admittedly, ETRTO recommendations are relatively conservative. For example, in the 700C road world, several manufacturers now offer rims with an internal width of 23–25 mm intended to be used with 28–32C tires.

## Can I fit 700×25 Tyres on a 700×23 wheel?

Both sizes will work on the same rims. There is a definite trend in the last year or two to put slightly wider tires on road bikes.

## What does C mean on a bike tire?

The letter “C” in a tire’s parameters refers to an archaic French standard for bike tire sizing which relied on letters ranging from “A” to “D” to indicate a tire’s width and subsequently the circumference of the corresponding rim.

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## What’s the difference between 700x23C and 700x25c?

There is very little difference between most 700×23 and 700×25 tires. Some manfacturers tires tend to run a little small in some models (my latest continentai 23’s are actually more like 20’s) If your bike came with 23’s you can run 25’s with no worries.