Originally Posted by oldbobcat

Look at your body proportions. If your limbs are long for your height (especially the legs), you might prefer the larger size. If your limbs are short or average for your overall height, you'll probably prefer the smaller size.


Here are two proportions that can be rough guidelines. If your legs are longer than 47 percent of your total height, consider them longer than average. If your ape factor (total wingspan / total height) is greater than 1.04, consider your arms longer than average.

If you are buying a bike with an integrated bar and stem, you are not flying economy class. Any dealer worth its salt will properly size the bike and swap the bar and stem if necessary, free of charge. On the other hand, if you're ordering this bike sight-unseen with an integrated bar and stem and you don't know how it's going to fit, I recommend you change your shopping plan.