Lexus · NX 350h · Rear

Lexus NX 350h rear tyre pressure

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 rear

2.31 bar · 231 kPa at the rear axle

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

The rear of a SUV / crossover takes passengers, luggage and, on vans, payload. Catalogue rear pressure on the Lexus NX 350h is 32-35 psi / 2.2-2.4 bar. TPMS typically warns near 25 psi (about 25% below target). That is already a soft tyre, not a fill target. Keep side-to-side spread inside about 2 psi so the all-wheel drive hardware is not working on a radius mismatch.

Lexus NX 350h placard versus sidewall

Sidewall PSI is a carcass maximum. Recommended operating pressure for this NX 350h is the pillar sticker, near 34/34 psi.

Estimated pressure by tyre size (225/65R17 and others)

Planning cold pressures for sizes often seen on a SUV / crossover. This NX 350h sample opens with 225/65R17, then 235/60R18 and 245/55R19.

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

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

A family SUV / crossover with a boot full of luggage should use the laden rear figure if Ford, VW or Mercedes printed one. Otherwise the modest steps in the load table are only a sketch for this NX 350h.

How to set the NX 350h

Park the Lexus NX 350h 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 NX 350h is enough to feel a pull.
Refit valve caps and reset TPMS if the handbook asks for a relearn.

PSI, bar and kPa

PSI-led conversions for the Lexus NX 350h 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 NX 350h.

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

Lexus notes

No special Lexus exception: the NX 350h 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 Lexus NX 350h 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 Lexus sticker and this page disagree, the sticker wins.

Other Lexus models

IS 350 GX 470 LBX ES 330 GS 350 ES 350 IS 300 GS 200t

Questions about this NX 350h

Front versus rear on the Lexus NX 350h?

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 PSI if I plus-size toward 245/55R19?

Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 225/65R17, 235/60R18 and 245/55R19 as a planning band.

When does TPMS warn on a Lexus NX 350h?

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

How often should I check a NX 350h?

Monthly, before a long trip, and after a 10 °C weather swing. Include a full-size spare.

What is that in bar and kPa for the NX 350h?

Mid-points are about 2.31 bar (231 kPa) front and 2.31 bar (231 kPa) rear.

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