Jeep · Grand Cherokee · Cold

Setting cold tyres on a Jeep Grand Cherokee

Drivetrain: four-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

Cold means the Jeep Grand Cherokee 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. Size estimates on this page include 235/60R18, 245/55R19 and 225/60R18 — interpolated from the catalogue midpoint, not a second factory sticker. Keep side-to-side spread inside about 2 psi so the four-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 Grand Cherokee.

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 Grand Cherokee

Measure before the school run, not after the M25.
Write LF / RF / RR / RL. Do not keep Grand Cherokee 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 Grand Cherokee placard versus sidewall

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

Estimated pressure by tyre size (235/60R18 and others)

Planning cold pressures for sizes often seen on a SUV / crossover. This Grand Cherokee sample opens with 235/60R18, then 245/55R19 and 225/60R18.

Tyre size	Front PSI	Rear PSI	Front bar	Rear bar	Front kPa	Rear kPa	Note
235/60R18	36	36	2.48	2.48	248	248	Plus-size 18-inch
245/55R19	36	36	2.48	2.48	248	248	Low-profile 19-inch
225/60R18	35	35	2.41	2.41	241	241	Highway CUV
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
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
255/50R20	37	37	2.55	2.55	255	255	20-inch plus-size

PSI, bar and kPa

PSI-led conversions for the Jeep Grand Cherokee 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	34 psi / 2.34 bar	35 psi / 2.41 bar
Motorway + luggage	35 psi / 2.41 bar	36 psi / 2.48 bar

Jeep notes

No special Jeep exception: the Grand Cherokee 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 Grand Cherokee 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 Jeep sticker and this page disagree, the sticker wins.

Other Jeep models

Wrangler CJ-7 Liberty CJ-3 CJ-5 Willys Renegade Cherokee

Questions about this Grand Cherokee

What is that in bar and kPa for the Grand Cherokee?

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

Is the sidewall number correct on a Jeep Grand Cherokee?

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

How often should I check a Grand Cherokee?

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

Front versus rear on the Jeep Grand Cherokee?

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 Jeep Grand Cherokee 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.

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