205/50R17 · passenger car · kPa
234 kPa for 205/50R17 tyres
- Size
- 205/50R17
- Class
- passenger car
- Planning PSI
- 34
- Planning bar
- 2.34
kPa
234
2.34 bar · 34 psi · 100 kPa = 1 bar
205/50R17 · 34 psi · 2.34 bar · 234 kPa — estimates. Placard wins.
If the gauge only speaks kPa, 234 kPa is the sketch for this passenger car size. Fine-tune to the vehicle that actually wears 205/50R17. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed 205/50R17. Low-profile {sz} does not want a “softer” pressure to recover ride. Stay at or slightly above the car’s original placard if load index is kept.
kPa, bar and PSI
1 bar ≈ 14.5 psi; 1 psi ≈ 6.89 kPa. Planning midpoint for 205/50R17: 34 psi = 2.34 bar = 234 kPa.
| kPa | Bar | PSI |
|---|---|---|
| 207 | 2.07 | 30 |
| 214 | 2.14 | 31 |
| 221 | 2.21 | 32 |
| 228 | 2.28 | 33 |
| 234 | 2.34 | 34 |
| 241 | 2.41 | 35 |
| 248 | 2.48 | 36 |
| 255 | 2.55 | 37 |
| 262 | 2.62 | 38 |
| 269 | 2.69 | 39 |
| 276 | 2.76 | 40 |
| 283 | 2.83 | 41 |
| 290 | 2.90 | 42 |
| 296 | 2.96 | 43 |
| 303 | 3.03 | 44 |
| 310 | 3.10 | 45 |
| 317 | 3.17 | 46 |
Estimated 205/50R17 pressure by load
Plus-sizing to 205/50R17 from a taller OEM tyre usually keeps the same placard if the load index is equal or higher.
| Condition | Front (est.) | Rear (est.) |
|---|---|---|
| Driver only / unladen | 34 psi / 2.34 bar / 234 kPa | 34 psi / 2.34 bar / 234 kPa |
| Typical occupancy | 35 psi / 2.41 bar / 241 kPa | 36 psi / 2.48 bar / 248 kPa |
| Motorway + luggage (sketch) | 36 psi / 2.48 bar / 248 kPa | 37 psi / 2.55 bar / 255 kPa |
What 205/50R17 means
205/50R17 means a 205 millimetre section width, a sidewall that is 50 percent of that width, on a 17-inch rim. The R is radial construction.
17-inch compact plus-size. Rim diameter 17 in; section 205 mm. Estimates on this page assume a typical load index for the passenger car class.
Placard versus sidewall
The sidewall of a 205/50R17 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.
Temperature drift
Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for 205/50R17.
| Ambient | Gauge | Bar | kPa | Note |
|---|---|---|---|---|
| −5 °C (hard frost) | 31 psi | 2.14 bar | 214 kPa | Gauge reads low; do not overfill once warm |
| 0 °C | 32 psi | 2.21 bar | 221 kPa | Gauge reads low; do not overfill once warm |
| 8 °C (UK winter morning) | 33 psi | 2.28 bar | 228 kPa | Gauge reads low; do not overfill once warm |
| 20 °C (set cold here) | 34 psi | 2.34 bar | 234 kPa | Baseline for this size sketch |
| 30 °C | 36 psi | 2.48 bar | 248 kPa | Do not bleed a hot 205/50R17 |
| 38 °C (heatwave tarmac) | 37 psi | 2.55 bar | 255 kPa | Do not bleed a hot 205/50R17 |
How to set 205/50R17
- Measure before the school run, not after the motorway.
- Write LF / RF / RR / RL. Do not keep 205/50R17 numbers in your head.
- Add air in short bursts toward the placard, using 34 psi only as a map.
- If one 205/50R17 is 4 psi down, hunt for a nail before you blame the weather.
- Log date, ambient temperature and the four readings.
Cars often seen on 205/50R17
These catalogue models are often seen on 205/50R17 or a close OEM neighbour. Open the vehicle chart for axle-specific PSI and bar.
If the door sticker and this 205/50R17 page disagree, the sticker wins.
Questions about 205/50R17
What PSI should 205/50R17 tyres be?
A passenger car planning figure is about 34 psi cold (2.34 bar / 234 kPa). Confirm on the vehicle placard — two cars can share 205/50R17 and not share a sticker.
Is the sidewall number correct for 205/50R17?
No. Sidewall PSI or kPa is a maximum for the carcass. Operating pressure is the door-pillar placard.
When does TPMS warn on 205/50R17?
Direct TPMS typically flags about 25% below target — near 26 psi if you were aiming at 34. Fill to the sticker, not to the lamp.
Is 205/50R17 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 205/50R17 in kPa?
234 kPa is the planning midpoint (100 kPa = 1 bar). 241 kPa is one PSI higher.
Handbook: placard · bar vs PSI · cold inflation · all sizes