Frame size is the most important consideration when buying a bike in a mens frame style. When you factor in your trunk to leg length ratio, it can make buying a bike a bit tricky size wise especially if you
are buying a bike online.
You can get a more accurate approximation by using the Stand Over Height figures from Size Guide charts.
Expanded Sizing Info
If someone chose a size based solely on the foot/inch method and they had short legs for their height, the frame may be too large for them due to their having a short standover height. Conversely, if someone
had long legs for their height, the frame may be too small for them and they might have to raise the seat height too much and the overall frame length may be too short which would result in an uncomfortable ride.
Even when choosing a frame size at a bike shop, some adjustments or alterations may be needed. The seat height and position can be adjusted and alterations to the handlebar position can be achieved by purchasing
height and/or length extenders or shorter stems (goosenecks).
We prefer to use the Sand Over Height method which insures that at a minumum you will be able to stand over the frame and by making some of the adjustments/alterations as mentioned above, your bicycle will fit
you correctly and give you a comfortable ride.
Stand Over Height Calculator
Put on a pair of shoes that are approximately the kind you wear when riding.
Place a book between your legs (all the way up) with the binding side up and and parallel to the floor. Then have a friend measure fron the binding to the floor.
Add 1 to 2 inches to the measurement (2 to 3 inches for mountain bikes). This will give you a minimum Stand Over Height.
This Stand Over Height will allow you to stand over your bike while leaving enough clearance above the top tube of the frame.
Enter the final measurement in inches into the Inches box below: (use the decimal equivalent for fractions Examples: 1/2 = .5 1/4 = .25).
Your minimum Stand Over Height is:
Write down your calculated minimum Stand Over Height. Then refer to the Size Guide Charts for the bikes you're considering.