What does Etrto 622 mean?

The ETRTO size specification 37-622 indicates the width of 37 mm and the tire inner diameter of 622 mm. This dimension is clear and allows a precise classification of the rim size. The inch marking (e.g. 28 x 1.40) states the approximate outer diameter (28 inches) and the tire width (1.40 inches).

What does 700c 622 mean?

It’s a historical relic. 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 size is 50 622 tire?

2280 mm
What is the exact circumference of my tire?

How do you read an ETRTO file?

What is ETRTO 17C?

The C designation is one set out by a cycling group called ETRTO (for European Tyre and Rim Technical Organization) that has worked with manufacturers to standardize around sizes. The trend today is toward road cycling wheel rims that are 17C or wider and tires that are 25C or wider.

How do you read an Etrto file?

What is ETRTO number?

At Swytch, we measure our wheel sizes by ETRTO number, a 5-digit number of the form ## – ### which tells you the precise diameter. The first two digits of the ETRTO denote the tyre width in mm. Swytch wheels can take any width tyres from 1.1-2.5 inches (28-64mm). The last three are the inner tyre diameter.

What ETRTO 559?

The rim could well be listed as 559 x 22, the 559 refers to the rim diameter at the bead seat (i.e. the inner diameter of the tyre), the 22 refers to the inner dimension of the rim between the rim flanges. One inch is 25.4 mm so 22mm = 0.87 inches.

Are wider wheels better cycling?

It turns out wider tyres are actually faster along with the benefits of increased comfort and traction. It helps that modern road bikes accept wider tyres, even race bikes like the Tarmac and Emonda take up to a 28mm tyre, while the Synapse and Domane go even wider.