UK · EU reference Tyre Pressure

155/65R14 · passenger car · Bar

Recommended bar for 155/65R14

Size
155/65R14
Class
passenger car
Planning PSI
32
Planning bar
2.21

bar

2.21

32 psi · 221 kPa · not a second factory sticker

155/65R14 · 32 psi · 2.21 bar · 221 kPa — estimates. Placard wins.

European stickers print bar. 155/65R14 often sits near 2.21 bar on a passenger car (32 psi / 221 kPa). 2.21 bar is not “32 divided by ten”. TPMS typically warns near 24 psi (about 25% below a 32 psi target). That is already a soft tyre.

Bar, PSI and kPa

1 bar ≈ 14.5 psi; 1 psi ≈ 6.89 kPa. Planning midpoint for 155/65R14: 32 psi = 2.21 bar = 221 kPa.

BarPSIkPa
1.9328193
2.0029200
2.0730207
2.1431214
2.2132221
2.2833228
2.3434234
2.4135241
2.4836248
2.5537255
2.6238262
2.6939269
2.7640276
2.8341283
2.9042290
2.9643296
3.0344303

Estimated 155/65R14 pressure by load

Load moves the rear first on a passenger car. If the factory placard already has a laden column, use that — not this sketch for 155/65R14.

ConditionFront (est.)Rear (est.)
Driver only / unladen32 psi / 2.21 bar / 221 kPa32 psi / 2.21 bar / 221 kPa
Typical occupancy32 psi / 2.21 bar / 221 kPa33 psi / 2.28 bar / 228 kPa
Motorway + luggage (sketch)33 psi / 2.28 bar / 228 kPa34 psi / 2.34 bar / 234 kPa

Placard versus sidewall

This website maps size searches such as “155/65R14 psi”. It does not replace the VIN label. If the two disagree, the label wins.

What 155/65R14 means

Read 155/65R14 as width / aspect R rim. Nothing in the size string is a pressure. Pressure lives on the car, not moulded as 205 or 55.

City-car and older compact spare-adjacent size. Rim diameter 14 in; section 155 mm. Estimates on this page assume a typical load index for the passenger car class.

Cars often seen on 155/65R14

These catalogue models are often seen on 155/65R14 or a close OEM neighbour. Open the vehicle chart for axle-specific PSI and bar.

Ford FiestaVolkswagen Up

How to set 155/65R14

  1. Measure before the school run, not after the motorway.
  2. Write LF / RF / RR / RL. Do not keep 155/65R14 numbers in your head.
  3. Add air in short bursts toward the placard, using 32 psi only as a map.
  4. If one 155/65R14 is 4 psi down, hunt for a nail before you blame the weather.
  5. Log date, ambient temperature and the four readings.

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 32 psi as a 20 °C baseline for 155/65R14.

AmbientGaugeBarkPaNote
−5 °C (hard frost)29 psi2 bar200 kPaGauge reads low; do not overfill once warm
0 °C30 psi2.07 bar207 kPaGauge reads low; do not overfill once warm
8 °C (UK winter morning)31 psi2.14 bar214 kPaGauge reads low; do not overfill once warm
20 °C (set cold here)32 psi2.21 bar221 kPaBaseline for this size sketch
30 °C34 psi2.34 bar234 kPaDo not bleed a hot 155/65R14
38 °C (heatwave tarmac)35 psi2.41 bar241 kPaDo not bleed a hot 155/65R14

A cheap gauge and a monthly habit will do more for a set of 155/65R14 than nitrogen upsells.

Questions about 155/65R14

Is 155/65R14 the same as a plus-size swap?

Only if that is the size you fitted. Overall diameter should stay close to OEM. Pressure still follows the car, with load index at or above original.

What is 155/65R14 in kPa?

221 kPa is the planning midpoint (100 kPa = 1 bar). 228 kPa is one PSI higher.

What is 155/65R14 in bar?

32 psi is 2.21 bar. Add a tenth of a bar if the placard’s laden column is higher, which is common on vans that wear this size.

What PSI should 155/65R14 tyres be?

A passenger car planning figure is about 32 psi cold (2.21 bar / 221 kPa). Confirm on the vehicle placard — two cars can share 155/65R14 and not share a sticker.

Should I bleed pressure after a motorway run?

No. Heat raises the gauge. Set cold only. Bleeding a hot tyre leaves it low the next morning.

Handbook: placard · bar vs PSI · cold inflation · all sizes