Talk all you want about the benefits of upgrading wheels, brakes, or even your bike’s entire drivetrain. But pound for pound (or gram for gram in this case), there is no better bang-for-buck upgrade than new mountain bike tires. After all, that spinning rubber is the only thing on your bike that actually touches the ground – unless you crash. So why are tires so important? What benefits do the various types offer? And how do you decide which ones are best for you and your riding style? Read on to find out.

Mount up a new set of tires and you’re going to gain some combination of improved traction, lower rolling resistance, reduced weight, increased durability, and/or greater puncture protection. Alas, like so much in life, you can’t have it all. And that means deciding what makes the most sense for you.

For instance, the addition of taller knobs or higher overall volume can dramatically improve traction, but will also likely increase weight and rolling resistance. Conversely lower profile lightweight speedsters will go fast, but won’t hook up as well or be as durable. So while gaining traction can net increased confidence, if the top of the XC race podium is your goal, giving up a little grip to enhance rolling efficiency is likely the way to go. It’s a similar story with weight. Lighter tires can help you scoot up hills quicker, but typically offer less traction, are not as robust, and are thus more puncture prone.

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