Come Converti Tire Pressure
PSI, Bar, e kPa Made Simple
Get il ConversionsYour vehicle's tire pressure specification potrebbe be in PSI, but your gauge reads bar—o your European car shows kPa while your US gauge displays PSI. Convertendo tra these units e straightforward once you know il formulas.
Step-da-Step Conversions
Convertendo PSI un Bar
- Find your tire pressure in PSI (e.g., 32 PSI)
- Divide da 14.504
- Risultato: 32 ÷ 14.504 = 2.21 bar
Convertendo PSI un kPa
- Find your tire pressure in PSI (e.g., 32 PSI)
- Multiply da 6.895
- Risultato: 32 × 6.895 = 221 kPa
Convertendo Bar un PSI
- Find your tire pressure in bar (e.g., 2.4 bar)
- Multiply da 14.504
- Risultato: 2.4 × 14.504 = 34.8 PSI
Car Tire Pressure Conversione Table
| PSI | Bar | kPa | Notes |
|---|---|---|---|
| 26 | 1.79 | 179 | Low (underinflated) |
| 28 | 1.93 | 193 | Economy cars (min) |
| 30 | 2.07 | 207 | Comuni front tire |
| 32 | 2.21 | 221 | Most common setting |
| 35 | 2.41 | 241 | Loaded vehicle |
| 36 | 2.48 | 248 | SUVs, crossovers |
| 40 | 2.76 | 276 | Light trucks |
| 44 | 3.03 | 303 | Heavy loads |
Bicycle Tire Pressure Conversione
| PSI | Bar | kPa | Bike Type |
|---|---|---|---|
| 30 | 2.07 | 207 | Fat bike |
| 40 | 2.76 | 276 | Mountain bike (low) |
| 50 | 3.45 | 345 | Mountain bike (high) |
| 60 | 4.14 | 414 | Hybrid/city bike |
| 80 | 5.52 | 552 | Touring bike |
| 100 | 6.89 | 689 | Road bike (low) |
| 110 | 7.58 | 758 | Road bike (typical) |
| 120 | 8.27 | 827 | Road bike (high) |
Truck e Commercial Vehicle Pressures
| PSI | Bar | kPa | Application |
|---|---|---|---|
| 50 | 3.45 | 345 | Pickup truck |
| 65 | 4.48 | 448 | Loaded pickup |
| 80 | 5.52 | 552 | Light commercial |
| 100 | 6.89 | 689 | Medium truck |
| 110 | 7.58 | 758 | Semi-truck steer axle |
| 120 | 8.27 | 827 | Semi-truck drive axle |
Finding Your Recommended Pressure
Dove un Look
- Driver's door jamb: Sticker con recommended pressures
- Owner's manual: Full specifications
- Fuel door: Some vehicles show it here
- Tire sidewall: Shows MAXIMUM pressure (not recommended)
Important Notes
- Door jamb pressure e per COLD tires
- Pressure increases ~1 PSI per 10°F temperature
- Check pressure before driving o after sitting 3+ ore
- Sidewall max e NOT il recommended pressure
Conclusione
Convertendo tire pressure tra PSI, bar, e kPa e straightforward con il right formulas. Remember: PSI ÷ 14.5 ≈ bar, e PSI × 6.9 ≈ kPa. For most purposes, il quick approximations (÷15 per bar, ×7 per kPa) work well. Always usare il pressure recommended on your vehicle's door jamb o owner's manual—not il maximum shown on il tire itself.