Tire Pressure Calculator
The tire pressure calculator helps you determine optimal vehicle tire inflation pressure based on passenger load, cargo weight, and tire profile dimensions.
Tire Pressure Calculator by Vehicle Load & Radius
Find recommended cold tire pressure for front and rear axles in bar, PSI and kPa
Recommended Cold Tire Pressure
Always check pressure on cold tires (vehicle parked for at least 2 hours or driven under 2 km).
Effects of Improper Tire Inflation
Rapid shoulder wear, tire overheating, 5-10% increased fuel consumption, risk of rim bead blowout.
Balanced contact patch, superior braking performance, predictable cornering and extended tire life.
Excessive center tread wear, harsh ride over road imperfections, higher risk of sidewall puncture or impact blowout.
How to use
- Select your tire dimensions (e.g. 205/55 R16 or 225/45 R17).
- Enter curb weight and payload occupancy (passengers and luggage).
- Specify front and rear axle load distribution.
- Choose driving conditions (city, high-speed motorway, or fully laden).
- Review target cold inflation figures in Bar, kPa, and PSI.
- Compare results with the vehicle tire placard on the driver's door jamb.
How Payload Weight Affects Tire Pressure
Carrying heavy passenger loads or luggage compresses tire sidewalls. Increasing tire pressure stiffens the casing, ensuring correct contact patch geometry and preventing excessive heat buildup at highway speeds.
Cold vs. Warm Inflation Guidelines
Tire pressure must always be measured cold — before driving or at least three hours after parking. Normal friction generates heat, raising pressure by 3–5 PSI. Never bleed air from warm tires.
Frequently Asked Questions
What is standard car tire pressure?
Most passenger vehicles recommend between 30 and 35 PSI (2.1 to 2.4 bar) of cold pressure for daily driving.
Where can I find my vehicle's recommended tire pressure?
Look for the tire information label located on the driver side B-pillar door jamb, inside the fuel filler door, or in the owner's manual.
Does cold weather lower tire pressure?
Yes. For every 10°F (-12°C) drop in temperature, tire pressure decreases by approximately 1 PSI (0.07 bar).
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