Mercedes-Benz GLC : Tire pressure / Notes on tire pressure

WARNING Risk of accident due to insufficient or excessive tire pressure

Tires with either too low or too high a pressure present the following hazards:

• the tires could burst
• the tires could wear excessively and/or unevenly
• the driving characteristics as well as steering and braking characteristics may be severely impaired

Observe the recommended tire pressures and check the tire pressure of all tires including the spare wheel:

• monthly
• if altering the load on the vehicle
• prior to long journeys
• if the operating conditions change, for example when driving off-road

Adjust the tire pressure where necessary.

Tire pressure which is too high or too low can:

• Shorten the service life of the tires.
• Cause increased tire damage.
• Adversely affect driving characteristics and thus driving safety, e.g. due to hydroplaning.

WARNING Risk of accident due to too low a tire pressure

Tires with pressure that is too low can overheat and burst as a consequence.

In addition, they also suffer from irregular wear, which can significantly impair the braking properties and the handling characteristics.

Avoid excessively low tire pressure.

Tire pressure which is too low can cause:

• Tire faults as a result of overheating
• Impaired handling characteristics
• Irregular wear
• Increased fuel consumption

WARNING Risk of accident due to too high a tire pressure

Tires with excessively high pressure can burst.

In addition, they also suffer from irregular wear, which can significantly impair the braking properties and the handling characteristics.

Avoid excessively high tire pressures.

Tire pressure which is too high can cause:

• Increased braking distance
• Impaired handling characteristics
• Irregular wear
• Impaired driving comfort
• Susceptibility to damage

WARNING Risk of accident due to repeated pressure drop in the tires

The wheels, valves or tires could be damaged.

Too low a tire pressure can lead to the tires bursting.

Examine the tires for foreign objects.

Check whether the tire has a puncture or the valve has a leak.

If you are unable to rectify the damage, contact a qualified specialist workshop.

You can find information on tire pressure for the vehicle's factory-installed tires on the following labels:

• Tire and Loading Information placard on the B‑pillar of your vehicle.
• Tire pressure table on the inside of the fuel filler flap.

Observe the maximum tire pressure.

Use a suitable pressure gauge to check the tire pressure. The outer appearance of a tire does not permit any reliable conclusion about the tire pressure.

Only correct tire pressure when the tires are cold. Conditions for cold tires:

• The vehicle has been parked with the tires out of direct sunlight for at least three hours.
• The vehicle has traveled less than 1 mile (1.6 km).

The vehicle's tires heat up when driving. As the temperature of the tires increases, so too does the tire pressure.

Vehicles with a tire pressure monitoring system: You can also check the tire pressure using the on-board computer.

The tire pressure recommended for increased load/speed in the tire pressure table can affect the ride comfort.

WARNING Risk of accident due to unsuitable accessories on tire valves

If you mount unsuitable accessories onto tire valves, the tire valves may be overloaded and malfunction, which can cause tire pressure loss.

Only screw standard valve caps or valve caps specifically approved by Mercedes-Benz for your vehicle onto the tire valve.

Notes on trailer operation

Always inflate the rear axle tires to the recommended tire pressure on the tire pressure table for increased load.