Get bigger tires and then lower the air pressure for less rolling resistance on bumps and better traction. "New cyclocross'ers have a hard time embracing this but lower tire pressure is almost always universally faster," says Andrew Yee, the founder of Cyclocross Magazine. Yee, for example, weighs 165 pounds, and he often races as low as 25psi with tubeless setup. If you run tubes or not, look at higher-volume rubber like the Hutchinson Bulldog CX, a silver-rubber set of 700X34 tires that will work with tubes or tubeless on certain rims. They balance speed and grip with a tread dialed specifically for CX.
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