Mercedes-Benz · CLK 55 AMG · PSI

What PSI for a Mercedes-Benz CLK 55 AMG?

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

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

If a CLK 55 AMG owner asks “what PSI?”, start at 34 at the steering axle and 34 at the rear, then confirm the placard. Size estimates on this page include 255/40R17, 275/30R19 and 245/40R18 — interpolated from the catalogue midpoint, not a second factory sticker.

Mercedes-Benz CLK 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.

PSI, bar and kPa

PSI-led conversions for the Mercedes-Benz CLK 55 AMG 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

Estimated pressure by tyre size (255/40R17 and others)

255/40R17 is the first planning size here. 245/40R18 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
255/40R17	35	36	2.41	2.48	241	248	Rear stagger 17-inch
275/30R19	36	37	2.48	2.55	248	255	Rear 19-inch
245/40R18	35	36	2.41	2.48	241	248	Square-ish sport
225/40R18	35	35	2.41	2.41	241	241	Front 18-inch
225/45R17	34	35	2.34	2.41	234	241	Front sport size
275/35R18	36	37	2.48	2.55	248	255	Wide rear
255/35R18	35	36	2.41	2.48	241	248	Rear stagger 18-inch
235/35R19	36	36	2.48	2.48	248	248	Front 19-inch

How to set the CLK 55 AMG

Park the Mercedes-Benz CLK 55 AMG for at least three hours (cold tyres).
Use a calibrated gauge, not the only meter on a forecourt hose.
Set the placard for that axle — about 32-35 psi / 2.2-2.4 bar front and 32-35 psi / 2.2-2.4 bar rear on this catalogue row.
Recheck all four. A 2 psi miss on a rear-wheel drive CLK 55 AMG is enough to feel a pull.
Refit valve caps and reset TPMS if the handbook asks for a relearn.

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	37 psi / 2.55 bar

Temperature drift

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

Mercedes-Benz notes

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

Spare and inflator kit

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

Other Mercedes-Benz models

500 300 416 230 380 280 560 210/310

Questions about this CLK 55 AMG

What tyre pressure should a Mercedes-Benz CLK 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 PSI if I plus-size toward 245/40R18?

Keep load index at or above OEM. Low-profile sizes usually stay at or slightly above the placard. Use 255/40R17, 275/30R19 and 245/40R18 as a planning band.

When does TPMS warn on a Mercedes-Benz CLK 55 AMG?

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

Front versus rear on the Mercedes-Benz CLK 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.

Is the sidewall number correct on a Mercedes-Benz CLK 55 AMG?

No. Sidewall PSI is a maximum. The CLK 55 AMG placard is the operating target, near 32-35/32-35 psi.

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