Mercedes-Benz · GLB 180 · Rear

Mercedes-Benz GLB 180 rear tyres: 32-35 psi / 2.2-2.4 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

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

Loaded GLB 180 rears often need the sticker’s second column, not a copy of the front 32-35 psi figure. A 10 °C overnight drop takes roughly 1 psi (0.07 bar) off a closed Mercedes-Benz tyre. Keep side-to-side spread inside about 2 psi so the all-wheel drive hardware is not working on a radius mismatch.

Mercedes-Benz GLB 180 placard versus sidewall

Sidewall PSI is a carcass maximum. Recommended operating pressure for this GLB 180 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 GLB 180 sample opens with 225/65R17, then 245/55R19 and 225/60R18.

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

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 GLB 180.

How to set the GLB 180

Measure before the school run, not after the M25.
Write LF / RF / RR / RL. Do not keep GLB 180 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.

PSI, bar and kPa

PSI-led conversions for the Mercedes-Benz GLB 180 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 GLB 180.

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

Mercedes-Benz notes

Mercedes often lists comfort versus load. Match the table to how the GLB 180 is actually occupied that day.

Spare and inflator kit

A matching full-size spare on the Mercedes-Benz GLB 180 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 Mercedes-Benz sticker and this page disagree, the sticker wins.

Other Mercedes-Benz models

416 240 308 280 270 320 220 420

Questions about this GLB 180

Front versus rear on the Mercedes-Benz GLB 180?

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 Mercedes-Benz GLB 180 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 GLB 180?

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

How often should I check a GLB 180?

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

What PSI if I plus-size toward 225/60R18?

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

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