Cold pressure refers to the tyre pressure measurement taken before a track session when tyres are at ambient temperature, serving as the baseline reference point for all setup adjustments and comparisons. This measurement proves critical for consistency, as tyre pressures significantly influence grip levels, handling characteristics, and tyre wear rates.
Cold pressure considerations:
- Measured with a quality tyre pressure gauge before the kart goes on track
- Typically ranges from 8-12 PSI for slick tyres depending on compound and conditions
- Wet tyres generally run higher pressures, typically 10-14 PSI
- Ambient temperature affects optimal cold pressure settings
Recording cold pressures meticulously allows teams to correlate setup changes with performance outcomes and maintain consistency across sessions. Track temperature, tyre compound, driver weight, and circuit characteristics all influence optimal cold pressure settings. Teams typically establish baseline pressures through testing, then make small adjustments based on driver feedback regarding grip levels and handling balance. Taking cold pressure readings immediately before each session ensures accuracy, as even tyres sitting in the paddock can gain or lose pressure due to temperature fluctuations throughout the day.