Bicycle Computer Wheel Size Calculator

It will automatically calculate the estimated circumference in mm used by most new cycle computers cm used by some cycle computers.

Bicycle computer wheel size calculator. Sigma sport bicycle computer how to set wheel size i m making this video just so i won t have to find or read the manual again. A bicycle computer can be used on an electric scooter or go kart if the correct wheel size is programmed into it. Etrto tire size l mm l cm inch 47 203 12x1 75 935 94 54 203 12x1 95 940 94 12 40 254 14x1 50 1020 102 14 47 254 14x1 75 1055 106 40 305 16x1 50 1185 119. Tire size chart to get accurate results from a speed sensor like the wahoo rpm speed or blue sc input your wheel circumference in the wahoo fitness app.

To use the calculator below select a wheel and tire size from the table or enter the wheel and tire size in mm in the dia. An accurate speed sensor can also improve the accuracy of gps bike computers like the elemnt elemnt roam and elemnt bolt especially in tree cover or near buildings. I have photos from the latest two bike races ice crit and springside park fat bike race as well as many other races dating back several years. Wheel diameter is the distance between the bottom and top of the tire.

Brown contends it is important to ride aboard the bike when executing the roll out method to simulate riding conditions. Measure the height of the wheel from top to bottom with your millimeter tape. Tire size consists of a tire width and a bead seat diameter. Compare this number to the chart on page 15 in the sigma manual see link in references section to determine tire size.

Stand your wheel up on the ground. A iso tire size of 28 622 which of course is backwards b c it s european from how we would refer to a 700 x 28c tire has a tire width of 28 mm and a rim diameter of. The calculator above is based on the iso etrto european tyre and rim technical organization tire size which specifies tire size as a tire width and rim circumference in mm. Some bike computers require you to input tire size in centimeters while others use millimeters.

Is the value to enter into the bicycle computer for the wheel circumference or perimeter size. Sigma sport manual link. Both of these numbers are in millimeters. For example a 28 622 700 x 28c tire has a nominal width of 28 mm on a rim with a bead seat diameter of 622 mm.