Bicycle wheel size chart. Usually diameter but also sometimes the rim width too. Bike height chart the easiest. Sizing charts use the sizing fit link at the top of any product page to find the size thats best for you. Typically any 700 tire today is essentially the same size as an old 700c tire.
So if you dont know what size bike do i need here are the answers. The venerable sheldon brown has a gear calculator that uses a different method to determine wheel size. Etrto tire size l mm l cm inch 75 559 26x300 2170 217 28 590 26x1 18 1970 197 37 590 26x1 38 2068 207 37 584 26x1 12 2100 210 26. The bike size is measured from where the seat post starts and to the crank.
The important takeaway is that references to wheel size are really about rim size. Bicycle tires come in a bewildering variety of sizes. Plus sizing tyres is the latest trend in mountain bike tyresits basically increasing the height of the tyre sidewall of a given wheel size to give it the roll over traits of the next wheel size up along with a gain in tyre width to add an aggressive high traction character. The traditional sizing systems were based on the measurement of the outside of diameter of the tire so it would be listed as diameter x width.
This indicates the wheel is 26 and the tire is 22 wide. Tire size is shown on the side of a tire. However the evolution of tires and rims has made these measures inaccurate when it comes to compatibility. To make matters worse in the early days of cycling every country that manufactured bicycles developed its own system of marking the sizes.
You do see 650b which is the same as todays 275 mountain bike tire as well as 650c which has a slightly smaller inner diameter than a 650b tire and is found on a few road bikes. Please use this chart for your reference. His calculator uses an pre defined diameter for every rimtire combination and his diameters are almost always different than what the math would predict. Tire circumference may vary depending on tire pressure.
These letters sometimes still appear in tire sizes. Were here to help you with your bike sizing and cycling apparel sizing needs. Sizes are the most confusing thing when choosing bikes and wheels selecting tyres and tubes or trying to figure out what pressure to pump your tyres up to. Lets start with the easiest.
Usually the size is written on the tire sidewall for example it might read 26 x 22 a typical mountain bike size. Even worse different. Your height bike size. The wheel size is the measurement of the diameter of the wheel with a mounted tire.