The ultra-wide tire bed on the 303 XPLR S wheel allows for a lower tire pressure to increase your speeds and decrease your rolling resistance on gravel. Tire pressure varies based on the labeled tire width. Below is the max tire pressure for the given tire size. For optimum speed, you will need to run pressures far lower that the max pressure.
- Tires 40-44mm have a max tire pressure of 3.5bar/51 PSI
- Tires 45-54mm have a max tire pressure of 3bar/44 PSI
- Tires 55-64mm have a max tire pressure of 2.5bar/36 PSI
Please use Zipp’s Tire Pressure Guide to find the best starting point for tire pressure for your wheels.