The venerable sheldon brown has a gear calculator that uses a different method to determine wheel size.
Bike tyre size calculator.
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.
I ll calculate the best chainring cog combinations and.
Most lists the tire size both english french and german targets and rim circumference in millimeters.
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.
Enter your own info above and then press the button.
This means that you can easily find the right tire size although it is a danish number.
Sometimes you can t find any iso size on a tyre only the old school markings.
His calculator uses an pre defined diameter for every rim tire combination and his diameters are almost always different than what the math would predict.
Although they re familiar they can be very confusing.
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 a iso tire size of 28 622 is how we would refer to a 700 x 28c tire has a tire width of 28 mm and a rim diameter of 622 mm.
28 1 15 8 28 1 1 or 700 32c which are all 32 622.