
Should I buy a carbon-fiber bike?Absolutely. Maybe. Unless you shouldn't. Carbon is generally lighter than other materials, can be constructed to provide specific ride qualities in ways that metal tubes can't, and offers unlimited tube shapes--aero or just freaky cool. If you race and want a superstiff frame, carbon offers the best mix of low weight, aerodynamics and drivetrain stiffness without a buckboard ride. But it's also expensive. And not all carbon is equal: Less expensive frames use lower grades of fiber, which are heavier and less stiff, and often have a dead ride quality when compared with higher-grade carbon. If you're on a budget, there are many racy bikes made of high-tech aluminum or a mix of alloy and carbon, which are stiff and light but will ride a bit more harshly than their all-?carbon brethren. If you prize a smooth, refined ride feel, carbon can deliver--but so can steel and titanium, both of which continue to advance as frame materials. Ultimately, you should decide based on what you're willing to spend and whether you're a carbon person. Did you stand in line to buy the iPhone? Carbon's cutting-edge tech will appeal to you. But if you're restoring a 1952 MGTD in your garage, then a ti or steel bike from a small builder may be just right.