285/70R17 · pickup / double-cab · Bar
Recommended bar for 285/70R17
- Size
- 285/70R17
- Class
- pickup / double-cab
- Planning PSI
- 37
- Planning bar
- 2.55
bar
2.55
37 psi · 255 kPa · not a second factory sticker
285/70R17 · 37 psi · 2.55 bar · 255 kPa — estimates. Placard wins.
A 285/70R17 C-type or LT carcass can live far above a hatchback bar figure. This page’s 2.55 bar sketch is for the pickup / double-cab class, not every car that can physically mount the tyre. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed 285/70R17.
Bar, PSI and kPa
Use the table, then set a cold gauge. 255 kPa is 100 × 2.55 bar on this size.
| Bar | PSI | kPa |
|---|---|---|
| 2.28 | 33 | 228 |
| 2.34 | 34 | 234 |
| 2.41 | 35 | 241 |
| 2.48 | 36 | 248 |
| 2.55 | 37 | 255 |
| 2.62 | 38 | 262 |
| 2.69 | 39 | 269 |
| 2.76 | 40 | 276 |
| 2.83 | 41 | 283 |
| 2.90 | 42 | 290 |
| 2.96 | 43 | 296 |
| 3.03 | 44 | 303 |
| 3.10 | 45 | 310 |
| 3.17 | 46 | 317 |
| 3.24 | 47 | 324 |
| 3.31 | 48 | 331 |
| 3.38 | 49 | 338 |
Estimated 285/70R17 pressure by load
Load moves the rear first on a pickup / double-cab. If the factory placard already has a laden column, use that — not this sketch for 285/70R17.
| Condition | Front (est.) | Rear (est.) |
|---|---|---|
| Driver only / unladen | 37 psi / 2.55 bar / 255 kPa | 39 psi / 2.69 bar / 269 kPa |
| Typical occupancy | 38 psi / 2.62 bar / 262 kPa | 41 psi / 2.83 bar / 283 kPa |
| Payload / towing (sketch) | 39 psi / 2.69 bar / 269 kPa | 42 psi / 2.9 bar / 290 kPa |
Placard versus sidewall
If a forum says “all 285/70R17 run 37 psi”, ignore it. A Qashqai and a Golf can share a size and not share a sticker.
What 285/70R17 means
Read 285/70R17 as width / aspect R rim. Nothing in the size string is a pressure. Pressure lives on the car, not moulded as 205 or 55.
Light-truck / pickup all-season size. Rim diameter 17 in; section 285 mm. Estimates on this page assume a typical load index for the pickup / double-cab class.
Cars often seen on 285/70R17
285/70R17 is a valid metric size in this register even if it is not on the curated OEM shortlist. Treat the 37 psi / 2.55 bar figure as a class estimate and confirm on the vehicle that actually wears it.
How to set 285/70R17
- Park so the 285/70R17 tyres are cold (three hours, or less than about a mile).
- Read the door-pillar placard for that car — not the 285/70R17 sidewall maximum.
- If the sticker is missing, 37 psi / 2.55 bar is only a pickup / double-cab 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 37 psi as a 20 °C baseline for 285/70R17.
| Ambient | Gauge | Bar | kPa | Note |
|---|---|---|---|---|
| −5 °C (hard frost) | 34 psi | 2.34 bar | 234 kPa | Gauge reads low; do not overfill once warm |
| 0 °C | 35 psi | 2.41 bar | 241 kPa | Gauge reads low; do not overfill once warm |
| 8 °C (UK winter morning) | 36 psi | 2.48 bar | 248 kPa | Gauge reads low; do not overfill once warm |
| 20 °C (set cold here) | 37 psi | 2.55 bar | 255 kPa | Baseline for this size sketch |
| 30 °C | 39 psi | 2.69 bar | 269 kPa | Do not bleed a hot 285/70R17 |
| 38 °C (heatwave tarmac) | 40 psi | 2.76 bar | 276 kPa | Do not bleed a hot 285/70R17 |
Keep 285/70R17 on the printed band for that car; 37 psi is a size sketch, not a second VIN label.
Questions about 285/70R17
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.
What is 285/70R17 in kPa?
255 kPa is the planning midpoint (100 kPa = 1 bar). 262 kPa is one PSI higher.
What is 285/70R17 in bar?
37 psi is 2.55 bar. Add a tenth of a bar if the placard’s laden column is higher, which is common on vans that wear this size.
Can I run 285/70R17 at a lower pressure for comfort?
Not as a habit. A soft 285/70R17 cooks the shoulders and dulls steering. Keep load index and stay on the placard.
What PSI should 285/70R17 tyres be?
A pickup / double-cab planning figure is about 37 psi cold (2.55 bar / 255 kPa). Confirm on the vehicle placard — two cars can share 285/70R17 and not share a sticker.
Handbook: placard · bar vs PSI · cold inflation · all sizes