Infiniti · Q70 · PSI

Infiniti Q70 inflation in PSI (32-35 front, 32-35 rear)

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

34 / 34

Catalogue mid-points, front / rear · 2.2-2.4 / 2.2-2.4 bar

32-35 psi F · 32-35 psi R · 2.2-2.4 / 2.2-2.4 bar · 231/231 kPa

PSI is the Imperial reading most UK motorists still see on garage hoses. For the Infiniti Q70 the catalogue row is 32-35 psi front and 32-35 psi rear. Size estimates on this page include 225/60R18, 235/60R18 and 245/60R18 — 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

Sidewall PSI is a carcass maximum. Recommended operating pressure for this Q70 is the pillar sticker, near 34/34 psi.

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

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 235/60R18 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	35	2.41	2.41	241	241	Highway CUV
235/60R18	36	36	2.48	2.48	248	248	Plus-size 18-inch
245/60R18	36	37	2.48	2.55	248	255	Heavier CUV
255/50R20	37	37	2.55	2.55	255	255	20-inch plus-size
235/65R17	35	36	2.41	2.48	241	248	Mid-size SUV
225/65R17	35	35	2.41	2.41	241	241	Very common 17-inch
215/70R16	34	34	2.34	2.34	234	234	Compact crossover
245/55R19	36	36	2.48	2.48	248	248	Low-profile 19-inch

How to set the Q70

Park the Infiniti Q70 for at least three hours (cold tyres).
Use a calibrated gauge, not the only meter on a forecourt hose.
Set the placard for that axle — about 32-35 psi / 2.2-2.4 bar front and 32-35 psi / 2.2-2.4 bar rear on this catalogue row.
Recheck all four. A 2 psi miss on a all-wheel drive Q70 is enough to feel a pull.
Refit valve caps and reset TPMS if the handbook asks for a relearn.

Load notes

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	35 psi / 2.41 bar	36 psi / 2.48 bar
Motorway + luggage	36 psi / 2.48 bar	38 psi / 2.62 bar

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

EX37 EX30 EX35 G35 Q80 QX56 QX30 G37

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.

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.

When does TPMS warn on a Infiniti Q70?

Direct TPMS typically flags about 25% below placard — near 25 psi on this row. Fill to the sticker, not to the lamp.

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 PSI if I plus-size toward 245/60R18?

Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 225/60R18, 235/60R18 and 245/60R18 as a planning band.

Handbook: placard · bar vs PSI · front vs rear · cold inflation