Mercedes-Benz · C 55 AMG · kPa

Mercedes-Benz C 55 AMG tyre pressure in kPa

Drivetrain: rear-wheel drive
Body: passenger car
PSI F / R: 32-35 / 32-35
Bar F / R: 2.2-2.4 / 2.2-2.4

kPa

231 / 231

2.31 / 2.31 bar · 32-35 / 32-35 psi

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

Kilopascals show up on some Asian stickers and ISO sheets. 231 kPa front and 231 kPa rear is the Mercedes-Benz C 55 AMG midpoint (100 kPa = 1 bar). Size estimates on this page include 275/30R19, 255/40R17 and 235/35R19 — interpolated from the catalogue midpoint, not a second factory sticker.

kPa, bar and PSI

kPa-led conversions. 220 kPa is 2.2 bar and about 32 psi — handy if this C 55 AMG sticker uses SI units.

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

Estimated pressure by tyre size (275/30R19 and others)

Planning cold pressures for sizes often seen on a passenger car. This C 55 AMG sample opens with 275/30R19, then 255/40R17 and 235/35R19.

Tyre size	Front PSI	Rear PSI	Front bar	Rear bar	Front kPa	Rear kPa	Note
275/30R19	36	37	2.48	2.55	248	255	Rear 19-inch
255/40R17	35	36	2.41	2.48	241	248	Rear stagger 17-inch
235/35R19	36	36	2.48	2.48	248	248	Front 19-inch
225/40R18	35	35	2.41	2.41	241	241	Front 18-inch
245/40R18	35	36	2.41	2.48	241	248	Square-ish sport
275/35R18	36	37	2.48	2.55	248	255	Wide rear
225/45R17	34	35	2.34	2.41	234	241	Front sport size
255/35R18	35	36	2.41	2.48	241	248	Rear stagger 18-inch

Mercedes-Benz C 55 AMG placard versus sidewall

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

Temperature drift

Roughly 1 psi per 5–6 °C. The table uses 34 psi as a 20 °C baseline for this C 55 AMG.

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 C 55 AMG

Measure before the school run, not after the M25.
Write LF / RF / RR / RL. Do not keep C 55 AMG 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.

Load notes

Load moves the rear of a passenger car 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

Mercedes-Benz notes

Mercedes often lists comfort versus load. Match the table to how the C 55 AMG is actually occupied that day.

Spare and inflator kit

A matching full-size spare on the Mercedes-Benz C 55 AMG 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 C 55 AMG than nitrogen upsells.

Other Mercedes-Benz models

210/310 320 308 180 420 230 170 450

Questions about this C 55 AMG

What tyre pressure should a Mercedes-Benz C 55 AMG 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 C 55 AMG?

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

Front versus rear on the Mercedes-Benz C 55 AMG?

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.

How often should I check a C 55 AMG?

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

What PSI if I plus-size toward 235/35R19?

Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 275/30R19, 255/40R17 and 235/35R19 as a planning band.

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