UK · EU reference Tyre Pressure

185/70R14 · passenger car · Bar

Recommended bar for 185/70R14

Size
185/70R14
Class
passenger car
Planning PSI
32
Planning bar
2.21

bar

2.21

32 psi · 221 kPa · not a second factory sticker

185/70R14 · 32 psi · 2.21 bar · 221 kPa — estimates. Placard wins.

A 185/70R14 C-type or LT carcass can live far above a hatchback bar figure. This page’s 2.21 bar sketch is for the passenger car class, not every car that can physically mount the tyre. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed 185/70R14.

Bar, PSI and kPa

1 bar ≈ 14.5 psi; 1 psi ≈ 6.89 kPa. Planning midpoint for 185/70R14: 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 185/70R14 pressure by load

Plus-sizing to 185/70R14 from a taller OEM tyre usually keeps the same placard if the load index is equal or higher.

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

The sidewall of a 185/70R14 may say 51 psi or 350 kPa. That is a carcass maximum. Operating pressure is the tyre-information placard on the driver’s door pillar.

What 185/70R14 means

185/70R14 means a 185 millimetre section width, a sidewall that is 70 percent of that width, on a 14-inch rim. The R is radial construction.

Taller 14-inch touring. Rim diameter 14 in; section 185 mm. Estimates on this page assume a typical load index for the passenger car class.

Cars often seen on 185/70R14

These catalogue models are often seen on 185/70R14 or a close OEM neighbour. Open the vehicle chart for axle-specific PSI and bar.

Toyota Corolla

How to set 185/70R14

  1. Measure before the school run, not after the motorway.
  2. Write LF / RF / RR / RL. Do not keep 185/70R14 numbers in your head.
  3. Add air in short bursts toward the placard, using 32 psi only as a map.
  4. If one 185/70R14 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 185/70R14.

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 185/70R14
38 °C (heatwave tarmac)35 psi2.41 bar241 kPaDo not bleed a hot 185/70R14

Keep 185/70R14 on the printed band for that car; 32 psi is a size sketch, not a second VIN label.

Questions about 185/70R14

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.

Is the sidewall number correct for 185/70R14?

No. Sidewall PSI or kPa is a maximum for the carcass. Operating pressure is the door-pillar placard.

Is 185/70R14 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 PSI should 185/70R14 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 185/70R14 and not share a sticker.

What is 185/70R14 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.

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