Como to Converter Tire Pressão
PSI, Bar, e kPa Made Simples
Get o ConversionsYour vehicle's tire pressure specification might be in PSI, but your gauge reads bar—ou your European car shows kPa while your US gauge displays PSI. Converting entre estes unidades é straightforward once you know o formulas.
Passo a Passo Conversions
Converting PSI to Bar
- Find your tire pressure in PSI (e.g., 32 PSI)
- Divide by 14.504
- Result: 32 ÷ 14.504 = 2.21 bar
Converting PSI to kPa
- Find your tire pressure in PSI (e.g., 32 PSI)
- Multiply by 6.895
- Result: 32 × 6.895 = 221 kPa
Converting Bar to PSI
- Find your tire pressure in bar (e.g., 2.4 bar)
- Multiply by 14.504
- Result: 2.4 × 14.504 = 34.8 PSI
Car Tire Pressão Tabela de Conversão
| PSI | Bar | kPa | Notes |
|---|---|---|---|
| 26 | 1.79 | 179 | Low (underinflated) |
| 28 | 1.93 | 193 | Economy cars (min) |
| 30 | 2.07 | 207 | Comuns front tire |
| 32 | 2.21 | 221 | A maioria comum 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 Pressão Conversão
| 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 | Aplicação |
|---|---|---|---|
| 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 Pressão
Onde to Look
- Driver's door jamb: Sticker com recommended pressures
- Owner's manual: Full specifications
- Combustível door: Alguns vehicles show it aqui
- Tire sidewall: Shows MAXIMUM pressure (not recommended)
Importante Notes
- Door jamb pressure é for COLD tires
- Pressão increases ~1 PSI per 10°F temperature
- Check pressure before driving ou after sitting 3+ hours
- Sidewall max é NOT o recommended pressure
Conclusão
Converting tire pressure entre PSI, bar, e kPa é straightforward com o right formulas. Remember: PSI ÷ 14.5 ≈ bar, e PSI × 6.9 ≈ kPa. For mais purposes, o quick approximations (÷15 for bar, ×7 for kPa) work bem. Always use o pressure recommended on your vehicle's door jamb ou owner's manual—not o maximum shown on o tire itself.