Mountain bikes usually have a lower top tube than road bikes. She can straddle my road bike, and it a pinch, ride it. But because her torso is shorter than mine, to do so very long forces her into an uncomfortable stretched out position. Her bike is from the extra small category while mine is from the medium category, but hers is also designed for a woman. All of that said, the bike frame that works best for you is the one that fits your physiology. If the reach to the handlebars is too near or too far, the stem can be switched out for a shorter or longer one.
Even the crank arms and brake levers can be swapped for a difference size if necessary. Leave a comment and let us know how it helped, or comment with additional questions that you had that we can use to improve the guide. Bicycle frame sizes are measured in centimeters. If you only know your height in centimeters because you are outside the United States, then first convert your height in centimeters into feet and inches.
Then look for a bicycle frame size that is correct for that height. An adult cyclist should be able to touch the floor with their tip-toes while sat in the saddle. Here are a few tips to help you get your saddle in the perfect position:. It may seem simple, but this is actually a tried-and-tested method and popular within the cycling community. Reach distance can be changed by two factors on your bike:. If you have the saddle in a comfortable fore and aft position, then changing the stem length can give you the correct reach.
Be careful when adjusting your reach, however. If you do want a more precise reach distance, a handy tool that we use is the ape index. Your ape index can help you deduce whether or not you need a smaller frame size.
However, if your arm span is bigger than your height by 5cm or more, then you should think about moving up to a larger frame size. Stack height is the space between the bottom of the lower headset cup and the top of the upper headset cup. This is the part of the frame that the top of the fork goes into. The stack height of the bike depends largely on the kind of bike it is. For example, sportive bikes tend to have a bigger stack height, while race bikes will usually have a shorter stack height for a lower front end.
Looking for the right tyre size can feel a little like navigating a minefield at times, but understanding the particulars can help you get things spot on for a much easier ride. On a road bike, tyre sizes are described using dimensions. Generally speaking, wider tyres provide a smoother ride as the volume of air in each tyre is larger. Several wheel manufacturers make wider 23mm or 25mm wide rims. City Bike This table will help you if you do not have your leg length at hand: Your height in cm Recommended frame size in cm - cm 42 - 48 cm - cm 48 - 52 cm - cm 52 - 55 cm - cm 55 - 58 cm - cm 58 - 61 cm - cm 61 - 63 cm - cm 63 - 66 cm from cm from 66 cm.
Touring, Flat Bar or Hybrid bike This table will help you if you do not have the stride length at hand: Your height in cm Recommended frame size in cm - cm 42 - 47 cm - cm 47 - 50 cm - cm 50 - 53 cm - cm 53 - 55 cm - cm 55 - 58 cm - cm 58 - 60 cm - cm 60 - 63 cm from cm from 63 cm.
E-Bike When purchasing an e-bike it pays to be diligent when it comes to frame sizing - after all, e-bikes will typically carry a higher price-tag than a non-motorised bike. Kids bikes Similar to some Adults, Kids can typically fit a broad variety of sizes. Some Disclaimers Everybody is different, so the values in our tables are only guideline values.
Between Two Bike Sizes? BikeExchange Concierge Confused by the options on offer, or what is the best type of bike for you? Powered by. Sometimes bike sizing charts or our bike size calculator will recommend two different bike frame sizing options.
This means that both the larger and smaller road bike frame size or mountain bike frame size recommended will be suitable for you. To help you make the right choice we asked a bike specialist Dr. Barney Wainwright for some advice. The key measurement is reach which is how long the bike feels in the riding position.
Reach is affected by your trunk length as well as the length of your arms. Trunk length, also known as upper body length or sitting height, is the measurement from your hips to your shoulders.
If your trunk length or sitting height is longer than average, then the larger of the two sizes recommended in the size chart will be ideal. If on the other hand you have a shorter than average trunk height, then the smaller of the two recommended sizes will probably be best for you. Once you have your bike there are some adjustments that you can make to fine-tune the fit.
Have a look at the other videos in our Boardman Performance Centre bike sizing series in our Bike Fitting Guide to see how easy it is to get the right bike fit. Road bike sizing and mountain bike sizes are slightly different and the units used in bike sizes vary depending on type and brand. Road bike sizes are usually given in centimetres, while mountain bike frame sizes are quoted in inches.
Fortunately, our bike size chart takes away the guesswork as it suggests mountain bike frame size and road bike frame size in either inches or centimetres alongside manufacturers bike size charts. Many bike manufacturers will quote bike sizes as S, M, L or small, medium or large etc. Kids bike sizes are usually based on wheel size.
Some MTB sizing guides will use inches while you might find road bike sizes in centimetres. For model specific sizing please check the Sizing Tab on the product page of the bike that you are interested in. Please note all sizing information is to be used as a guide only. This is because bike sizes can vary for different brands and models. If you are unsure which size bike will be best for you, our bike specialist team are here to help. Call us on , chat with Live Help or email info tredz.
The above information is a general overview to bike sizing, model specific sizing can be found on all the product pages for the most popular brands, if in doubt use these tables for the most specific sizing information. Mountain bike geometry can be confusing. Here we explain the most important metrics and what they mean.
To find the right size bike for your height look at this bike size chart first. This will give you a general idea of the best size for you but be sure to check the individual size chart for the model of bike you want before you buy.
The size of your existing bike will be shown somewhere on the frame, usually a sticker on the seat tube or top tube.
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