215/50R17 · passenger car · kPa
215/50R17 kPa inflation table
- Size
- 215/50R17
- Class
- passenger car
- Planning PSI
- 34
- Planning bar
- 2.34
kPa
234
2.34 bar · 34 psi · 100 kPa = 1 bar
215/50R17 · 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 215/50R17. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed 215/50R17.
kPa, bar and PSI
Use the table, then set a cold gauge. 234 kPa is 100 × 2.34 bar on this size.
| 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 215/50R17 pressure by load
These 215/50R17 load steps are ± a few PSI from 34. They are not a licence to ignore a printed second column on a van or estate.
| 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 215/50R17 means
A 215/50R17 on a passenger car is a geometry. Two cars can share the size and disagree on PSI because mass and axle split differ.
Plus-size 17-inch touring. Rim diameter 17 in; section 215 mm. Estimates on this page assume a typical load index for the passenger car class.
Placard versus sidewall
If a forum says “all 215/50R17 run 34 psi”, ignore it. A Qashqai and a Golf can share a size and not share a sticker.
Temperature drift
Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for 215/50R17.
| 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 215/50R17 |
| 38 °C (heatwave tarmac) | 37 psi | 2.55 bar | 255 kPa | Do not bleed a hot 215/50R17 |
How to set 215/50R17
- Measure before the school run, not after the motorway.
- Write LF / RF / RR / RL. Do not keep 215/50R17 numbers in your head.
- Add air in short bursts toward the placard, using 34 psi only as a map.
- If one 215/50R17 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 215/50R17
These catalogue models are often seen on 215/50R17 or a close OEM neighbour. Open the vehicle chart for axle-specific PSI and bar.
Keep 215/50R17 on the printed band for that car; 34 psi is a size sketch, not a second VIN label.
Questions about 215/50R17
What is 215/50R17 in bar?
34 psi is 2.34 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 215/50R17 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 215/50R17 and not share a sticker.
Is 215/50R17 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.
Can I run 215/50R17 at a lower pressure for comfort?
Not as a habit. A soft 215/50R17 cooks the shoulders and dulls steering. Keep load index and stay on the placard.
What is 215/50R17 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