Question: what should i pump my bike tires to?
Answer: Pump it up. Narrow tires need more air pressure than wide ones: Road tires typically require 80 to 130 psi (pounds per square inch); mountain tires, 25 to 35 psi; and hybrid tires, 40 to 70 psi. To find your ideal pressure, start in the middle of these ranges, then factor in your body weight.