Tyre Pressure Optimization for Coarse Chip Asphalt

The coarse spray seal aggregates common throughout regional Australia present unique rolling resistance challenges. Traditional hyper-inflated narrow tyres suffer from immense high-frequency impedance losses, where the entire bicycle mass is deflected upward by stone projections, sapping forward kinetic energy.

Extensive field testing using specialized internal hub strain gauges demonstrates that increasing internal tyre volume while dropping operating pressures allows the casing to deform directly over road imperfections. This drastically minimizes systemic vibration drag vectors.

Tyre Width (Measured)	System Weight (Rider + Bike)	Optimal Pressure (Front/Rear)	Impedance Loss Reduction
28mm Tubeless	85 kg	62 / 65 PSI	Baseline Standard
30mm Tubeless	85 kg	56 / 59 PSI	-4.2 Watts Drag
32mm Tubeless	85 kg	48 / 51 PSI	-6.8 Watts Drag

Transitioning to broader hookless wheel geometries ensures optimal sidewall support at lower pressure limits, minimizing lateral casing roll during intensive high-speed cornering descents.