2011 Mercedes CL-Class Owner's Manual - Page 445

Tire pressure 443 Tire pressure table for all approved tires installed at the factory (example) If the tire pressure precedes a tire size, the tire pressure specification is only valid for this tire size. The vehicle loading conditions "partially laden" or "fully laden" are specified using a differing number of persons and luggage in the table. The actual number of seats may differ from this. Tire pressure too low or too high Underinflated tires G Warning Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Underinflated tires can: Rwear excessively and/or unevenly affect fuel economy Rfail from being overheated Radversely affect handling Radversely Tire pressure table with tire sizes (example) Overinflated tires G Warning Follow recommended tire inflation pressures. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Some tire pressure tables only show the rim diameter instead of the complete tire size, e.g. R18. The rim diameter is a component of the tire size and can be read from the tire sidewall (Y page 454). Overinflated tires can: Radversely Rwear affect handling excessively and/or unevenly Rbe more likely to become damaged Z Tires and wheels