185/70R14 · passenger car · Overview
Recommended pressure for 185/70R14 tyres
- Size
- 185/70R14
- Class
- passenger car
- Planning PSI
- 32
- Planning bar
- 2.21
185/70R14
32 psi / 2.21 bar
221 kPa · estimates for this size class
185/70R14 · 32 psi · 2.21 bar · 221 kPa — estimates. Placard wins.
185/70R14 is a passenger car size (185 mm section, 70 % aspect, 14-inch rim). A planning cold figure around 32 psi / 2.21 bar / 221 kPa is a starting map, not a second factory sticker. Taller 14-inch touring. These rows are estimates interpolated for the size, not OEM for a named VIN.
What 185/70R14 means
Read 185/70R14 as width / aspect R rim. Nothing in the size string is a pressure. Pressure lives on the car, not moulded as 205 or 55.
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.
Estimated 185/70R14 pressure by load
These 185/70R14 load steps are ± a few PSI from 32. They are not a licence to ignore a printed second column on a van or estate.
| Condition | Front (est.) | Rear (est.) |
|---|---|---|
| Driver only / unladen | 32 psi / 2.21 bar / 221 kPa | 32 psi / 2.21 bar / 221 kPa |
| Typical occupancy | 33 psi / 2.28 bar / 228 kPa | 34 psi / 2.34 bar / 234 kPa |
| Motorway + luggage (sketch) | 34 psi / 2.34 bar / 234 kPa | 35 psi / 2.41 bar / 241 kPa |
PSI, bar and kPa
Use the table, then set a cold gauge. 221 kPa is 100 × 2.21 bar on this size.
| PSI | Bar | kPa |
|---|---|---|
| 28 | 1.93 | 193 |
| 29 | 2.00 | 200 |
| 30 | 2.07 | 207 |
| 31 | 2.14 | 214 |
| 32 | 2.21 | 221 |
| 33 | 2.28 | 228 |
| 34 | 2.34 | 234 |
| 35 | 2.41 | 241 |
| 36 | 2.48 | 248 |
| 37 | 2.55 | 255 |
| 38 | 2.62 | 262 |
| 39 | 2.69 | 269 |
| 40 | 2.76 | 276 |
| 41 | 2.83 | 283 |
| 42 | 2.90 | 290 |
| 43 | 2.96 | 296 |
| 44 | 3.03 | 303 |
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.
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.
How to set 185/70R14
- Measure before the school run, not after the motorway.
- Write LF / RF / RR / RL. Do not keep 185/70R14 numbers in your head.
- Add air in short bursts toward the placard, using 32 psi only as a map.
- If one 185/70R14 is 4 psi down, hunt for a nail before you blame the weather.
- 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.
| Ambient | Gauge | Bar | kPa | Note |
|---|---|---|---|---|
| −5 °C (hard frost) | 29 psi | 2 bar | 200 kPa | Gauge reads low; do not overfill once warm |
| 0 °C | 30 psi | 2.07 bar | 207 kPa | Gauge reads low; do not overfill once warm |
| 8 °C (UK winter morning) | 31 psi | 2.14 bar | 214 kPa | Gauge reads low; do not overfill once warm |
| 20 °C (set cold here) | 32 psi | 2.21 bar | 221 kPa | Baseline for this size sketch |
| 30 °C | 34 psi | 2.34 bar | 234 kPa | Do not bleed a hot 185/70R14 |
| 38 °C (heatwave tarmac) | 35 psi | 2.41 bar | 241 kPa | Do 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
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.
When does TPMS warn on 185/70R14?
Direct TPMS typically flags about 25% below target — near 24 psi if you were aiming at 32. Fill to the sticker, not to the lamp.
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 is 185/70R14 in kPa?
221 kPa is the planning midpoint (100 kPa = 1 bar). 228 kPa is one PSI higher.
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.
Handbook: placard · bar vs PSI · cold inflation · all sizes