Silca Tire Pressure Calculator

Calculate optimal tire pressure for road cycling, mountain biking, and cars. Enter your weight, tire width, and riding conditions for precise PSI recommendations. Improve comfort, grip, and performance.

Recommended Tire Pressure

50 / 50 psi

Road cycling • 28mm tires • 193lbs total

Front Tire (psi)

50

Rear Tire (psi)

50

Tire Pressure Optimization Guide

Correct tire pressure is critical for safety, performance, and comfort. Under-inflated tires increase rolling resistance, wear faster, and risk pinch flats. Over-inflated tires reduce traction, transmit more road vibration, and increase the risk of puncture. This calculator uses proven formulas based on weight distribution, tire volume, and riding surface to recommend optimal pressures.

Why Tire Pressure Matters

  • Safety: Proper pressure prevents blowouts and improves braking
  • Performance: Optimal pressure reduces rolling resistance
  • Comfort: Correct pressure absorbs road vibrations
  • Tire Life: Even wear extends tire lifespan
  • Fuel Economy: Proper car tire pressure saves fuel

Signs of Incorrect Tire Pressure

SymptomLikely CauseSolution
Center tread wearOver-inflatedReduce pressure 2-3 psi
Edge tread wearUnder-inflatedIncrease pressure 2-3 psi
Harsh rideOver-inflatedLower to recommended psi
Poor cornering gripUnder-inflatedIncrease to recommended psi
Frequent pinch flatsUnder-inflatedAdd 5-10 psi

Frequently Asked Questions

What is the correct tire pressure for road cycling?
Optimal road bike tire pressure depends on your total weight (rider + bike), tire width, and riding surface. General guidelines: 25mm tires: 80-100 psi. 28mm tires: 70-90 psi. 30-32mm tires: 60-80 psi. Use the lower end for rougher roads and higher end for smooth pavement. Lower pressures provide more comfort and grip.
What tire pressure should I use for mountain biking?
MTB tire pressure is much lower than road: typically 20-35 psi for trail riding, 18-30 psi for cross-country, and 15-25 psi for downhill. Tubeless setups can run lower pressures. Heavier riders need higher pressure, while lighter riders can run less. The front tire should typically be 2-3 psi less than the rear for better traction.
How does temperature affect tire pressure?
Tire pressure changes approximately 1-2 psi for every 10°F change in temperature. As temperature drops, tire pressure decreases. As temperature rises, pressure increases. This is due to the ideal gas law (PV = nRT). Check and adjust your tire pressure seasonally, especially when riding in extreme temperatures.

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