Mercedes-Benz CLK tyre pressures
Front 32 psi (2.2 bar), rear 32 psi (2.2 bar) on the standard 17-inch wheels, and the figures for the other 2 wheel sizes it was sold with. Manufacturer data, checked cold.
| Wheels | Tyre size | Front | Rear |
|---|---|---|---|
| 17"standard | 225/45R17 / 245/40R17 | 32 psi · 2.2 bar | 32 psi · 2.2 bar |
| 16" | 205/55R16 / 225/50R16 | 30 psi · 2.1 bar | 30 psi · 2.1 bar |
| 18" | 225/40R18 / 255/35R18 | 32 psi · 2.2 bar | 35 psi · 2.4 bar |
Manufacturer figures for the Mercedes-Benz CLK, normal load, tyres cold. If the label on your door pillar or fuel flap says something different, go with that.
Tyres at the MOT
In 2025, the Mercedes-Benz CLK failed its MOT on tyres in 7.4% of 25,046 tests. Cars of the same age failed on tyres 6.1% of the time, so it failed more often than average for its age. Another 26.6% passed with a tyre advisory, usually tread close to the limit.
What the MOT tester checks on your tyres · The full 2025 figures
DVSA anonymised MOT data, 2025: MOT tests on cars (class 4), not counting retests. The figures cover the whole Mercedes-Benz CLK range, not only this version. Contains public sector information licensed under the Open Government Licence v3.0.
Resetting the tyre pressure warning light on your Mercedes-Benz
Many Mercedes from about 2009 to 2020 (A, B, C, E, CLA, GLA, GLC and others) use an indirect tyre pressure loss warning system. Others have a tyre pressure monitor with sensors in the wheels, more common on recent and larger models. Cars from before about 2009 often have neither.
- Set all four tyres to the correct cold pressures on the fuel-flap label, for your load.
- Switch the ignition on.
- Using the steering-wheel buttons, open the Service menu on the dashboard and select Tyre pressure.
- Choose to restart the system and confirm: 'Tyre press. now OK?' or 'Use current pressures as new reference values?' > Yes.
- Drive normally. After a few minutes it stores the new pressures and clears any warning.
When to reset: Restart the system after any pressure change, wheel change or rotation.
Cars with the MBUX touchscreen (2018 on) have the same restart option; the exact menu wording varies, so check the car's digital handbook.
Menu names vary by model and year, so check your handbook if yours looks different. More in what the warning light means.
Got a different CLK? Check by registration
Put your reg in and we'll show the figures for your exact car, including the wheel size it left the factory on.
What tyre pressure should a CLK have?
32 psi at the front and 32 psi at the rear (2.2 and 2.2 bar) on the standard 17-inch wheels, with the tyres cold. Larger optional wheels use slightly different figures — see the table above.
Should I use a higher pressure when the car is loaded?
The manufacturer gives one figure for this car, so no. If you're carrying a full load for a long motorway run, the label on the door pillar may show a higher figure — follow that if it does.
What tyre size does the CLK use?
225/45R17, 245/40R17, 205/55R16, 225/50R16, 225/40R18 or 255/35R18, depending on the wheels it was ordered with. The size is on the tyre's sidewall, e.g. 235/40R18.
Does the Mercedes-Benz CLK fail the MOT on tyres more often?
Yes, more often than average for its age. In 2025, 7.4% of Mercedes-Benz CLK MOT tests failed on tyres, against 6.1% for cars of the same age (DVSA MOT data, 25,046 tests). Another 26.6% passed with a tyre advisory.
Check them cold. Pressures are set for tyres that haven't been driven more than a mile or two. After a run they read 3–4 psi high.
Once a month, and before a long trip. Tyres lose about 1 psi a month on their own.
The sticker wins. If your car's door-pillar or fuel-flap label says something different, go with that — it knows your exact spec.