Tire Pressure Calculator

Tire Pressure Calculator

Select your tire width:
25 mm 26 mm 27 mm 28 mm 29 mm 30 mm 31 mm 32 mm 33 mm 34 mm 35 mm 36 mm 37 mm 38 mm 39 mm 40 mm 41 mm 42 mm 43 mm 44 mm 45 mm 46 mm 47 mm 48 mm 49 mm 50 mm 51 mm 52 mm 53 mm 54 mm 55 mm

Enter the combined weight of rider and bicycle
Kilograms (kg) Pounds (lbs)

The calculator gives you two tire pressure recommendations. Use the ‘Soft’ value for gravel, rough pavement, or if you prefer a more comfortable ride. Use the ‘Firm’ value if you like your bike to have a firm feel. The ‘Firm’ values also provide a considerable margin of safety if your pressure drops a bit. With the ‘Soft’ pressure, you are stressing your tire casing more, and it may wear out faster.

For almost 20 years, we have tested tires in many widths, at many pressures, with many casings and tread patterns—on smooth roads, with a rider on the bike. We’ve found that supple high-performance tires roll at the same speed at either of these two pressures: soft or firm. Pressures between these two values roll a little slower. On rough surfaces, your bike will be faster at the ‘Soft’ pressure.

These pressure recommendations optimize your bike for speed, but speed isn’t everything. Use these values as starting points to find out which pressure feels best for your bike, your terrain and your riding style. Also remember that your pump’s gauge may not be accurate. When in doubt, use a tire pressure that feels right and safe to you instead of values provided by the calculator.

Do not exceed the maximum pressure for your tire and/or rim. For tubeless installation, many tires have lower maximum pressures than what’s listed on the sidewall. Refer to the specifications of your tire/rim manufacturers. Maximum pressure for tubeless tires on hookless rims is defined by ETRTO standards: 73 psi (5 bar).