Jeep · Gladiator · Cold

Setting cold tyres on a Jeep Gladiator

Drivetrain: four-wheel drive
Body: pickup / double-cab
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

Cold means the Jeep Gladiator has stood at least three hours, or covered less than about a mile. Heat from a dual carriageway run is not the number you set. TPMS typically warns near 25 psi (about 25% below target). That is already a soft tyre, not a fill target. Commercial and load-biased bodies like this pickup / double-cab often need a higher rear; LT or C-type sizes such as LT265/70R17 are not filled like a Fiesta.

Temperature and a cold gauge

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

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 Gladiator

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

Jeep Gladiator placard versus sidewall

If the Jeep sticker is painted over, the handbook is next. This website is a map, not a replacement VIN label.

Estimated pressure by tyre size (265/70R17 and others)

Planning cold pressures for sizes often seen on a pickup / double-cab. This Gladiator sample opens with 265/70R17, then 285/70R17 and LT265/70R17.

Tyre size	Front PSI	Rear PSI	Front bar	Rear bar	Front kPa	Rear kPa	Note
265/70R17	37	39	2.55	2.69	255	269	Typical 17-inch load tyre
285/70R17	38	41	2.62	2.83	262	283	Wide all-terrain
LT265/70R17	42	48	2.9	3.31	290	331	LT 17-inch
275/65R18	37	40	2.55	2.76	255	276	Plus-size 18-inch
245/70R16	36	38	2.48	2.62	248	262	Common 16-inch all-terrain
255/65R17	37	39	2.55	2.69	255	269	Highway 17-inch
LT245/75R16	42	46	2.9	3.17	290	317	LT-metric, higher load
235/75R15	35	37	2.41	2.55	241	255	Older compact truck

PSI, bar and kPa

PSI-led conversions for the Jeep Gladiator 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 pickup / double-cab 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
Payload / towing	36 psi / 2.48 bar	37 psi / 2.55 bar

Jeep notes

No special Jeep exception: the Gladiator 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 Jeep Gladiator 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.

A cheap gauge and a monthly habit will do more for this Gladiator than nitrogen upsells.

Other Jeep models

CJ-7 Avenger Willys CJ-5 Renegade Wagoneer Wrangler CJ-3

Questions about this Gladiator

When does TPMS warn on a Jeep Gladiator?

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

What PSI if I plus-size toward LT265/70R17?

Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 265/70R17, 285/70R17 and LT265/70R17 as a planning band.

Is the sidewall number correct on a Jeep Gladiator?

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

How often should I check a Gladiator?

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

Should I bleed pressure after a motorway run?

No. Heat raises the gauge. Set cold only. Bleeding a hot tyre leaves it low the next morning.

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