Korean car manuals are usually in psi, while European cars and some air pumps use bar — leaving many people unsure how much to actually put in their tires.
The exact formula
One bar is 14.5038 psi. Multiply bar by 14.5038 to get psi.
A quick mental-math shortcut
"psi ≈ bar × 14.5" is close enough for most purposes. Going the other way, "bar ≈ psi ÷ 14.5" or "psi × 0.07".
Finding the correct tire pressure
Most passenger cars recommend 30–35 psi (about 2.1–2.4 bar). The exact figure is usually printed on a sticker inside the driver's door or the fuel filler flap, in psi or kPa.
When psi, bar, and kPa all show up
European specs sometimes list kPa (kilopascals) alongside bar (1 bar = 100 kPa). When all three units are mixed together, converting everything back to bar as a common reference is the safest way to compare.
Conversion table
| psi | bar |
|---|---|
| 30 | 2.07 |
| 32 | 2.21 |
| 35 | 2.41 |
| 36 | 2.48 |
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FastestUnitConverter's pressure converter handles psi and bar along with atmospheres and kPa, all at once.
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