Bike Sizing

It is important to choose the right size bike as a correctly fitting cycle will be more comfortable to ride and enable you to ride faster, further and in more control.

You can use the following advice to find an appropriate frame size – just bear in mind that personal preference can play a large part in selecting a frame size and so, this information is not guaranteed to be correct for everyone.

Please note that this is a very basic guide. It is intended for recreational riders to advise on the most suitable frame size. For more serious riders there are many more specific size equirements to achieve a comfortable riding position. For this type of rider a professional bike fit is advised and will be money well spent.

Firstly, you must measure your inside leg measurement.  To find this out correctly it is best to use the following method:

Stand upright with your back to a wall and with your shoes off and legs together.

Take a pencil and mark the wall at crotch level and measure the distance to the floor.

You can now use this measurement as a guide to which size bike you would like depending on the style of riding (touring, sportif etc). If your measurement falls between two sizes try to bear in mind your overall height. If your legs are long for your height you should perhaps err towards the smaller frame size. If your legs are short for your overall height then maybe the larger frame size would be better for you.

Frame with a horizontal top tube

If you are purchasing a bike with a horizontal top tube then use the following formula:

Inside leg measurement (cm) x 0.69

The result of this sum will give you the frame size you require. If you fall between sizes we advise you go for the smaller size.

Frame with a sloping top tube

If you are purchasing a bike with a sloping top tube then use the following formula:

Inside leg measurement (cm) x 0.64

The result of this sum will give you the frame size you require. If you fall between sizes we advise you go for the smaller size.

Bikes are measured by their frame size. This is the length of the seat tube measured from the centre of the bolt which fastens the chainwheel to the top of the seat tube.

Once you have your bike you can make other small adjustments to aid your comfort. The saddle height can be adjusted along with its fore and aft position as can the height and length of the handlebar stem. The position of the brake levers around the handlebar can also be tailored to suit your personal riding style.

Bike Sizing Guide – Kids’ Bikes

Kids bike sizing usually focuses on the wheel diameter of a bike and links it to the age of a child. Here’s our Kids Bike Sizing Guide.

Age can be a misleading measurement to use when buying a bike, so if you have any doubts at all we recommend that you contact us. Having said that, here’s a rough guide for starters

2 – 4 years Balance Bike or 12″
3 – 5 years 14″-16″
4 – 6/7 years 16″
5 – 8/9 years 20″
7 – 11/12 years 24″
10+ – small frame 26″

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