Lexus · LX 450d · Cold

Setting cold tyres on a Lexus LX 450d

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

UK winter mornings will show a lower gauge on this LX 450d without a puncture. Set 34/34 psi at ~20 °C equivalent, not after a motorway blast. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed Lexus tyre. Keep side-to-side spread inside about 2 psi so the all-wheel drive hardware is not working on a radius mismatch.

Temperature and a cold gauge

Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for this LX 450d.

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

How to set the LX 450d

Park the Lexus LX 450d 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 LX 450d is enough to feel a pull.
Refit valve caps and reset TPMS if the handbook asks for a relearn.

Lexus LX 450d placard versus sidewall

The tyre-information placard on a Lexus LX 450d sits on the driver’s door pillar (sometimes the fuel-filler flap). Catalogue figures here are a general band: 32-35 / 32-35 psi.

Estimated pressure by tyre size (225/60R18 and others)

If your Lexus LX 450d no longer wears the OEM diameter, start at the row nearest 225/60R18 or 245/55R19 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
245/55R19	36	36	2.48	2.48	248	248	Low-profile 19-inch
235/60R18	36	36	2.48	2.48	248	248	Plus-size 18-inch
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
215/70R16	34	34	2.34	2.34	234	234	Compact crossover
225/65R17	35	35	2.41	2.41	241	241	Very common 17-inch
245/60R18	36	37	2.48	2.55	248	255	Heavier CUV

PSI, bar and kPa

PSI-led conversions for the Lexus LX 450d 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

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	37 psi / 2.55 bar

Lexus notes

No special Lexus exception: the LX 450d 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 LX 450d 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

GS 250 CT 200h GX 470 ES 350 IS F LC 500 ES 300 IS 220d

Questions about this LX 450d

Front versus rear on the Lexus LX 450d?

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 Lexus LX 450d 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 is that in bar and kPa for the LX 450d?

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

How often should I check a LX 450d?

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

What PSI if I plus-size toward 235/60R18?

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

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