Information On Tires/Rims - AH40.10-P-9411-01A
MODEL ALL (4xWD, CAR, Heavy transporter, smart)
Outline:
- Tires
- Tire pressure
- Tire pressure monitor
- Cleaning
- Storage
- Disposal
- Disk wheels
- Tire label
Tires:
- For service conversions, compare the tire/disk wheel designation with the entries in the vehicle documents.
- Always replace damaged and defective tires. The repair methods employed by retail tire suppliers are not approved by Mercedes-Benz. Indentations ≤ 0.8 mm on the side face of the tire are generally safe and permissible.
- Before mounting the tires, the disk wheels should be cleaned in the area of the bead seat.
- Tire valves should generally be changed whenever a tire is mounted.
Not with TPM tire pressure sensors.
- Only use tires listed in the valid Service Information bulletins and repair instructions.
- If a single tire is replaced, install it on the front axle. This does not apply to vehicles with different tires of varying specifications on the front and rear wheels.
- Always provide all disk wheels with tires of the same construction, same make and same design.
- An appropriate sticker must be attached in the driver's field of view if the permissible maximum speed of an M+S tire is below the maximum speed of the vehicle.
- Installing tires with a higher speed rating is permissible.
- Run-in new tires for approx. 100 km at moderate speed.
- Install unidirectional tires according to the arrow on the side wall of the tire.
- Tires are subject to an aging process, which can have negative effects on the properties of the tire.
Tire pressure
Excessively low tire pressure increases the rolling resistance and increases flexing of the tire. This causes the critical temperature limit to be exceeded (carcass detachment) and destroys the tire.
Establish the cause in the event of any pressure loss, and replace the tire if necessary.
Tire pressure monitor
Before replacing a tire, check the manufacturing date of the TPM tire pressure sensor and replace tire pressure sensor if necessary.
- Manufacturer specifications for battery life, 10 years.
Before replacing a tire, check the condition of the TPM tire pressure sensor for damage.
It can otherwise lead to function impairments.
- Replace TPM tire pressure sensor if damaged.
Cleaning
The use of high-pressure cleaners with round jet nozzles to clean the wheels can lead to tire damage. Such damage occurs especially on the tire side walls. When using flat-spray nozzles be sure to:
- Maintain a distance of at least 30 cm.
- Do not direct the water jet at a single point on the surface of the tire for any length of time.
Storage
Before putting into storage, clean tires thoroughly and check for damage and adequate tire tread depth. The position and running direction of the tires should also be marked with chalk. Do not store tires outdoors. The effects of sunlight, heat, moving air and ozone cause the rubber to lose its elasticity and strength, it ages faster and cracks. Storage areas should be dry, cool and dark. Avoid drafts by keeping doors and windows closed as much as possible. Do not bring the tire into contact with gasoline, oil or greases as these dissolve the rubber.
Disposal
Perform collection, storage and disposal in accordance with the legal requirements and the company's own regulations.
Disk wheels
Do not repair damaged or deformed disk wheels.
Otherwise, safety will be compromised.
Note the following points:
- When changing wheels, e.g. light alloy wheels for steel wheels, ensure that the wheel bolts required for the spare wheel are enclosed in a clearly visible position.
The spare wheel is a steel wheel. Vehicles fitted with light alloy rims at the plant have corresponding wheel bolts enclosed.
- Only use wheels of the same design approved by Mercedes-Benz.
- Strengthened steel wheels are identified by a sticker on the wheel disk.
- On steel and light alloy wheels, the wheel bolts should always be tightened to the specified torque using a torque wrench.
- The seat for the tire bead must display no corrosion pits.
- Before inserting a new tire valve clean the contact surfaces on the disk wheel.
Tire label
The European Union directive stipulates the labeling of tires with regard to fuel efficiency and other essential parameters. Car and commercial vehicle tires as of 01.11.2012 must be marked with a tire label. This provides information on the fuel efficiency (1), the wet adhesion (2) and the external rolling noise (3) of the tires.
The tire label contains information on the following tire parameters:
- Fuel efficiency (1): depicted by a pictogram and expressed in classes from A to G.
- Wet adhesion (2): depicted by a pictogram and expressed in classes from A to G.
- External rolling noise (3): depicted by a pictogram and expressed as a passing noise in dB.