What Wahine said!

I have 650 wheels on two of my road bikes, and any slowness I experience is due to my bike's motor rather than its wheels. Besides, 650 wheels are generally lighter than 700 wheels, and as you know, rotational weight is exactly where you want to lighten up!

What are the disadvantages of 650's? Well, you probably won't be able to swap tubes/tires with someone in your group if you have a problem out on the road. Also, there's less 650 tires to select from. To add insult to injury, Continental doesn't allow you to choose different colors for your GP 4000's in the 650 size. What a travesty!!

- Auntie Em (according to my nephew)