LT265/70R17 · LT-metric truck · PSI
LT265/70R17 tyre pressure in PSI
- Size
- LT265/70R17
- Class
- LT-metric truck
- Planning PSI
- 55
- Planning bar
- 3.79
psi
55
3.79 bar · 379 kPa · LT-metric truck planning figure
LT265/70R17 · 55 psi · 3.79 bar · 379 kPa — estimates. Placard wins.
PSI is the garage-hose number. For LT265/70R17 a typical LT-metric truck planning figure is 55 psi cold — about 3.79 bar or 379 kPa. TPMS typically warns near 41 psi (about 25% below a 55 psi target). That is already a soft tyre. LT-metric sizes print a load range. The vehicle door sticker, not the LT sidewall maximum, is still the operating pressure.
Estimated LT265/70R17 pressure by load
Plus-sizing to LT265/70R17 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 | 55 psi / 3.79 bar / 379 kPa | 57 psi / 3.93 bar / 393 kPa |
| Typical occupancy | 55 psi / 3.79 bar / 379 kPa | 58 psi / 4 bar / 400 kPa |
| Payload / towing (sketch) | 56 psi / 3.86 bar / 386 kPa | 65 psi / 4.48 bar / 448 kPa |
PSI, bar and kPa
Convert around the LT265/70R17 band. 3.79 bar is about 55 psi — not 23, not 33 unless the maths says so.
| PSI | Bar | kPa |
|---|---|---|
| 44 | 3.03 | 303 |
| 46 | 3.17 | 317 |
| 50 | 3.45 | 345 |
| 51 | 3.52 | 352 |
| 52 | 3.59 | 359 |
| 53 | 3.65 | 365 |
| 54 | 3.72 | 372 |
| 55 | 3.79 | 379 |
| 56 | 3.86 | 386 |
| 57 | 3.93 | 393 |
| 58 | 4.00 | 400 |
| 59 | 4.07 | 407 |
| 60 | 4.14 | 414 |
| 61 | 4.21 | 421 |
| 62 | 4.27 | 427 |
| 63 | 4.34 | 434 |
| 64 | 4.41 | 441 |
| 65 | 4.48 | 448 |
| 66 | 4.55 | 455 |
| 67 | 4.62 | 462 |
| 80 | 5.52 | 552 |
What LT265/70R17 means
Read LT265/70R17 as width / aspect R rim. Nothing in the size string is a pressure. Pressure lives on the car, not moulded as 205 or 55.
Typical LT 17-inch. Rim diameter 17 in; section 265 mm. Estimates on this page assume a typical load index for the LT-metric truck class.
Placard versus sidewall
This website maps size searches such as “LT265/70R17 psi”. It does not replace the VIN label. If the two disagree, the label wins.
Cars often seen on LT265/70R17
These catalogue models are often seen on LT265/70R17 or a close OEM neighbour. Open the vehicle chart for axle-specific PSI and bar.
How to set LT265/70R17
- Park so the LT265/70R17 tyres are cold (three hours, or less than about a mile).
- Read the door-pillar placard for that car — not the LT265/70R17 sidewall maximum.
- If the sticker is missing, 55 psi / 3.79 bar is only a LT-metric truck planning figure for this size.
- Set all four with a calibrated gauge. A 3 psi miss on one corner shows up as a wander.
- Refit valve caps and reset TPMS if the handbook asks for a relearn.
Temperature drift
Roughly 1 psi per 5–6 °C. The table uses 55 psi as a 20 °C baseline for LT265/70R17.
| Ambient | Gauge | Bar | kPa | Note |
|---|---|---|---|---|
| −5 °C (hard frost) | 52 psi | 3.59 bar | 359 kPa | Gauge reads low; do not overfill once warm |
| 0 °C | 53 psi | 3.65 bar | 365 kPa | Gauge reads low; do not overfill once warm |
| 8 °C (UK winter morning) | 54 psi | 3.72 bar | 372 kPa | Gauge reads low; do not overfill once warm |
| 20 °C (set cold here) | 55 psi | 3.79 bar | 379 kPa | Baseline for this size sketch |
| 30 °C | 57 psi | 3.93 bar | 393 kPa | Do not bleed a hot LT265/70R17 |
| 38 °C (heatwave tarmac) | 58 psi | 4 bar | 400 kPa | Do not bleed a hot LT265/70R17 |
If the door sticker and this LT265/70R17 page disagree, the sticker wins.
Questions about LT265/70R17
Is LT265/70R17 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 LT265/70R17 in kPa?
379 kPa is the planning midpoint (100 kPa = 1 bar). 386 kPa is one PSI higher.
What is LT265/70R17 in bar?
55 psi is 3.79 bar. Add a tenth of a bar if the placard’s laden column is higher, which is common on vans that wear this size.
Is the sidewall number correct for LT265/70R17?
No. Sidewall PSI or kPa is a maximum for the carcass. Operating pressure is the door-pillar placard.
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