Mountain Bikes

摘要

For eons, mountain bikes came with one wheel size: 26 inches. But over the past five or so years, 29-inch wheels have become ubiquitous. Thanks to their larger diameter, "29ers" are more stable, put more rubber in contact with the dirt, and roll over obstacles better. They're slightly heavier and don't turn quite as nimbly, but for most people they're the better choice.