Rental Bike Sizing

AZ Bike Rentals understands the important of sizing bikes and making sure the bicyclist fits the bike.  Here is a resource to allow others to comprehend the seriousness of sizing and hopefully will help those in need of a better explanation of bike sizing.


Comfort Bikes are simple:


 

Road and Mountain bike sizing can get a little more involved…

An important step in the bicycle renting process is to select the appropriate size rental bike.  If you have any questions in regards to selecting a rental size please give us a call at 1-866-91-BIKES and we can let you know in less than a minute what you should select.  If you would like to dive into sizing on your own please see the compiled charts below as they will help you to determine the right Size Bike for you, be it a Road BikeMountain Bike, or Comfort Bike.

1) Find Your Measurements

To figure out the right size for you, a few basic measurements are necessary:

– Your leg inseam (from your crotch, where the saddle would be, to your foot)

– Your torso length (from your crotch to your sternum – the V-shaped curve below your neck)

– Your arm length (from the end of your collarbone to the middle of your closed fist)

2) Know Some Basic Formulas

Your inseam is the most often consulted one. Most bike size charts note the stand-over height. This is your inseam plus another 1-2 inches for comfortable clearance of that top tube. Some sources claim that road bikes require 1-2 inches clearance while mountain or commuter bikes need 2-4 inches. (If you’re using a bike with a step-through frame, then that measurement of reference doesn’t really work since the top tube is lowered.)

Another formula is that of the top tube length. I used to scoff at these details but I’ve come to appreciate that finding a road bike that is on the compacter side with a shorter top tube makes a big difference for me. I have a short torso so that distance between the saddle and the handlebars can really affect my ride. To figure out your ideal top tube length, do the following math:

(torso length + arm length) / 2 = x

x – 6 = top tube length

(Add your torso length to your arm length, divide that by two, and subtract six). This will tell you in inches what the ideal distance would be between your seat and handlebars.

3) Consult a Few Size Charts

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4) Trial and Error

Ultimately, finding a well fitting bike is like finding any well fitting garment – only trying it on will really tell you how it fits. As Alan of EcoVelo so eloquently put it, ‘Bike sizing is an art not a science‘. Figuring out some basic math and having a few numbers for reference will certainly help get you in the right direction and it will even allow you to rule out easily identifiable ‘too big’ or ‘too small’ bikes when shopping online, but nothing will truly confirm that a bike is the right one for you until you take it for a spin.  It’s all about experimenting with what feels right and comfortable to you, which is also something that might change over time as you get more confident on a bike and maybe even alter your riding style.