Tire Pressure Guide: PSI to Bar Conversion Chart and Safe Pressure Ranges

Understanding Tire Pressure Units

Different countries use different pressure units:

• PSI (pounds per square inch) — USA, UK


• Bar — Europe, most of the world


• kPa (kilopascals) — Australia, some Asian countries

PSI to Bar Conversion Chart

Formula: 1 PSI = 0.0689476 bar = 6.89476 kPa

Recommended Pressures by Vehicle

PSI	Bar	kPa
26	1.79	179
28	1.93	193
30	2.07	207
32	2.21	221
33	2.28	228
35	2.41	241
36	2.48	248
38	2.62	262
40	2.76	276
44	3.03	303
50	3.45	345
60	4.14	414
80	5.52	552
100	6.89	689
Vehicle Type	Typical PSI	Typical Bar
Small car	30-33	2.1-2.3
Medium sedan	32-35	2.2-2.4
SUV / crossover	33-38	2.3-2.6
Light truck	35-44	2.4-3.0
Road bicycle	80-130	5.5-9.0
Mountain bicycle	30-50	2.1-3.4
Motorcycle	28-42	1.9-2.9




Seasonal Adjustment Tips

Winter:


• Check pressure at least monthly (cold weather drops pressure)


• Measure when tires are cold (before driving)


• Add 1-2 PSI above recommended if driving in very cold conditions

Summer:


• Hot roads increase pressure — don't deflate hot tires


• Check in the morning before driving


• Stay at recommended pressure

For quick pressure conversions, use our Pressure Converter to convert between PSI, bar, kPa, atm, and more.