Infiniti · Q70 · Front
Infiniti Q70 front tyres: 32-35 psi / 2.2-2.4 bar
- Drivetrain
- all-wheel drive
- Body
- SUV / crossover
- PSI F / R
- 32-35 / 32-35
- Bar F / R
- 2.2-2.4 / 2.2-2.4
psi front
34
2.31 bar · 231 kPa at the steering axle
32-35 psi F · 32-35 psi R · 2.2-2.4 / 2.2-2.4 bar · 231/231 kPa
The front axle of a Infiniti Q70 steers and, on all-wheel drive cars, often pulls as well. Catalogue front pressure is 32-35 psi / 2.2-2.4 bar. Size estimates on this page include 225/60R18, 215/70R16 and 255/50R20 — interpolated from the catalogue midpoint, not a second factory sticker. Keep side-to-side spread inside about 2 psi so the all-wheel drive hardware is not working on a radius mismatch.
Infiniti Q70 placard versus sidewall
If the Infiniti sticker is painted over, the handbook is next. This website is a map, not a replacement VIN label.
Estimated pressure by tyre size (225/60R18 and others)
If your Infiniti Q70 no longer wears the OEM diameter, start at the row nearest 225/60R18 or 215/70R16 and confirm with the tyre maker’s load table.
| Tyre size | Front PSI | Rear PSI | Front bar | Rear bar | Front kPa | Rear kPa | Note |
|---|---|---|---|---|---|---|---|
| 225/60R18 | 35 | — | 2.41 | — | 241 | — | Highway CUV |
| 215/70R16 | 34 | — | 2.34 | — | 234 | — | Compact crossover |
| 255/50R20 | 37 | — | 2.55 | — | 255 | — | 20-inch plus-size |
| 245/60R18 | 36 | — | 2.48 | — | 248 | — | Heavier CUV |
| 235/60R18 | 36 | — | 2.48 | — | 248 | — | Plus-size 18-inch |
| 225/65R17 | 35 | — | 2.41 | — | 241 | — | Very common 17-inch |
| 235/65R17 | 35 | — | 2.41 | — | 241 | — | Mid-size SUV |
| 245/55R19 | 36 | — | 2.48 | — | 248 | — | Low-profile 19-inch |
Pressure against load
Load moves the rear of a SUV / crossover first. If the factory placard already has a “laden” column, use that instead of these sketches.
| Condition | Front (est.) | Rear (est.) |
|---|---|---|
| Driver only | 34 psi / 2.34 bar | 34 psi / 2.34 bar |
| Full occupancy | 34 psi / 2.34 bar | 35 psi / 2.41 bar |
| Motorway + luggage | 35 psi / 2.41 bar | 37 psi / 2.55 bar |
Steering feel on the Q70 lives on this axle. Do not drop front pressure to “soften” a plus-size 255/50R20; you will roll the sidewall in a roundabout.
How to set the Q70
- Measure before the school run, not after the M25.
- Write LF / RF / RR / RL. Do not keep Q70 numbers in your head.
- Add air in short bursts toward 34 psi (2.31 bar) front and 34 psi rear.
- If one corner is 4 psi down, hunt for a nail before you blame the weather.
- Log date, ambient temperature and the four readings.
PSI, bar and kPa
PSI-led conversions for the Infiniti Q70 band (32-35 / 32-35).
| PSI | Bar | kPa |
|---|---|---|
| 30 | 2.07 | 207 |
| 32 | 2.21 | 221 |
| 33 | 2.28 | 228 |
| 33.5 | 2.31 | 231 |
| 35 | 2.41 | 241 |
| 36 | 2.48 | 248 |
| 38 | 2.62 | 262 |
| 40 | 2.76 | 276 |
| 44 | 3.03 | 303 |
| 50 | 3.45 | 345 |
| 60 | 4.14 | 414 |
Temperature drift
Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for this Q70.
| Ambient | Gauge (front mid) | 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 |
| 30 °C | 36 psi | 2.48 bar | 248 kPa | Do not bleed a hot tyre |
| 38 °C (heatwave tarmac) | 37 psi | 2.55 bar | 255 kPa | Do not bleed a hot tyre |
Infiniti notes
No special Infiniti exception: the Q70 uses the door-pillar placard. Size estimates on this page only help if you have left the original load index behind.
Spare and inflator kit
A matching full-size spare on the Infiniti Q70 usually follows the higher axle (often the rear, near 32-35 psi). A space-saver is commonly 60 psi / 4.1 bar — read that tyre’s own sidewall. An inflator kit is not a spare; check the sealant date.
If the Infiniti sticker and this page disagree, the sticker wins.
Other Infiniti models
Questions about this Q70
Front versus rear on the Infiniti Q70?
This row is 32-35 F / 32-35 R. Even when they match, a laden rear can justify a higher number if the sticker prints one.
How often should I check a Q70?
Monthly, before a long trip, and after a 10 °C weather swing. Include a full-size spare.
Is the sidewall number correct on a Infiniti Q70?
No. Sidewall PSI is a maximum. The Q70 placard is the operating target, near 32-35/32-35 psi.
What tyre pressure should a Infiniti Q70 use?
Catalogue reference is 32-35 psi front and 32-35 psi rear (2.2-2.4 / 2.2-2.4 bar), cold. Confirm on the door-pillar placard.
What PSI if I plus-size toward 255/50R20?
Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 225/60R18, 215/70R16 and 255/50R20 as a planning band.
Handbook: placard · bar vs PSI · front vs rear · cold inflation