LT265/70R17 · LT-metric truck · Overview
LT265/70R17 tyre pressure
- Size
- LT265/70R17
- Class
- LT-metric truck
- Planning PSI
- 55
- Planning bar
- 3.79
LT265/70R17
55 psi / 3.79 bar
379 kPa · estimates for this size class
LT265/70R17 · 55 psi · 3.79 bar · 379 kPa — estimates. Placard wins.
Searches for “LT265/70R17 pressure” usually want a number. Use 55 psi (3.79 bar) only as a sketch; the door-pillar placard on the car that wears this size still wins. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed LT265/70R17. LT-metric sizes print a load range. The vehicle door sticker, not the LT sidewall maximum, is still the operating pressure.
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.
Estimated LT265/70R17 pressure by load
These LT265/70R17 load steps are ± a few PSI from 55. They are not a licence to ignore a printed second column on a van or estate.
| Condition | Front (est.) | Rear (est.) |
|---|---|---|
| Driver only / unladen | 55 psi / 3.79 bar / 379 kPa | 59 psi / 4.07 bar / 407 kPa |
| Typical occupancy | 56 psi / 3.86 bar / 386 kPa | 61 psi / 4.21 bar / 421 kPa |
| Payload / towing (sketch) | 57 psi / 3.93 bar / 393 kPa | 68 psi / 4.69 bar / 469 kPa |
PSI, bar and kPa
Use the table, then set a cold gauge. 379 kPa is 100 × 3.79 bar on this size.
| 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 |
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
What is LT265/70R17 in kPa?
379 kPa is the planning midpoint (100 kPa = 1 bar). 386 kPa is one PSI higher.
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.
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.
Can I run LT265/70R17 at a lower pressure for comfort?
Not as a habit. A soft LT265/70R17 cooks the shoulders and dulls steering. Keep load index and stay on the placard.
When does TPMS warn on LT265/70R17?
Direct TPMS typically flags about 25% below target — near 41 psi if you were aiming at 55. Fill to the sticker, not to the lamp.
Handbook: placard · bar vs PSI · cold inflation · all sizes