Workshop Tool · Pressure Optimizer
Bicycle Tire Pressure & Rolling Resistance Calculator
Optimize your front and rear inflation pressure balancing rolling resistance, impedance, grip, and casing protection.
1. System Mass & Setup
Recommended Inflation Pressure
RECOMMENDED TARGET PRESSURES
F: 4.8 bar | R: 5.3 bar
Front: 70 psi · Rear: 77 psi
Weight distribution
33.2 / 45.8 kg
Front (42%) vs Rear (58%) wheel load
Effective tire width
28.8 mm
Calculated on 19.0mm inner rim
Impedance breakpoint
5.9 bar / 86 psi
Point where surface vibration increases resistance
Min safe rim protection
3.3 bar / 48 psi
Prevents rim strikes & burping
Why Front and Rear pressures differ?
Your rear wheel supports 58% of the total system weight. Operating the front tire lower maximizes cornering grip and front-end compliance without risking rim damage.
Tire Width to Rim Match
A 28mm tire on a 19mm internal rim provides optimal aerodynamics and stable sidewall support without ballooning.
Pressure Tip: Wet or slippery conditions? Lower both tires by 0.3–0.5 bar (5–7 psi) for a larger contact patch and extra traction. Always adhere to manufacturer max limits on rim and tire sidewalls.
Runs locally in your browser. Calculations based on calibrated pneumatic tire deflection models.
