Lexus · GX 470 · Bar

Lexus GX 470 tyre pressure in 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

bar

2.31 / 2.31

32-35 / 32-35 psi · 231 / 231 kPa

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

2.3 bar is not 23 psi. On this GX 470 2.2-2.4 bar converts to about 32-35 psi. Use the table, not a guess. 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.

Bar, PSI and kPa

Bar-led conversions around the Lexus GX 470. 2.2-2.4 bar is not “32-35 divided by ten”.

Bar	PSI	kPa
2.07	30	207
2.21	32	221
2.28	33	228
2.31	33.5	231
2.41	35	241
2.48	36	248
2.62	38	262
2.76	40	276
3.03	44	303
3.45	50	345
4.14	60	414

Lexus GX 470 placard versus sidewall

The tyre-information placard on a Lexus GX 470 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 (255/50R20 and others)

255/50R20 is the first planning size here. 245/55R19 is usually the plus-size or LT step. Keep load index at or above original equipment.

Tyre size	Front PSI	Rear PSI	Front bar	Rear bar	Front kPa	Rear kPa	Note
255/50R20	37	37	2.55	2.55	255	255	20-inch plus-size
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
225/65R17	35	35	2.41	2.41	241	241	Very common 17-inch
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
235/65R17	35	36	2.41	2.48	241	248	Mid-size SUV

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	34 psi / 2.34 bar	35 psi / 2.41 bar
Motorway + luggage	35 psi / 2.41 bar	38 psi / 2.62 bar

How to set the GX 470

Measure before the school run, not after the M25.
Write LF / RF / RR / RL. Do not keep GX 470 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.

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for this GX 470.

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 GX 470 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 GX 470 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

GX 550 GS 200t GS 460 ES 300 IS 250 IS F GS F LBX

Questions about this GX 470

Front versus rear on the Lexus GX 470?

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 is that in bar and kPa for the GX 470?

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

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 255/50R20, 215/70R16 and 245/55R19 as a planning band.

When does TPMS warn on a Lexus GX 470?

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 Lexus GX 470?

No. Sidewall PSI is a maximum. The GX 470 placard is the operating target, near 32-35/32-35 psi.

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