2009 Mercedes CLK-Class Owner's Manual - Page 237

Operation Tires and wheels speed with a flat tire will cause excessive heat build-up and possibly a fire. Replace the tire if you find any of the above conditions. Make sure you also inspect the spare tire periodically for condition and inflation. Spare tires will age and become worn over time even if never used, and thus should be inspected and replaced when necessary. Tire care and maintenance G Warning! Regularly check the tires for damage. Damaged tires can cause tire inflation pressure loss. As a result, you could lose control of your vehicle. Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them. Check the tire inflation pressure at least every other week. For more information on checking tire inflation pressure, see "Recommended tire inflation pressure" (Y page 240). Important guidelines ROnly use sets of tires and rims of the same type and make. in new tires for approximately 60 miles (100 km) at moderate speeds. check the tires and rims for damage. Dented or bent rims can cause tire inflation pressure loss and damage to the tire beads. vehicle is heavily loaded, check tire inflation pressure and correct as required. not allow your tires to wear down too far. Adhesion properties on wet roads are sharply reduced at tread depths of less than 1/8 in (3 mm). RTires must be of the correct size for the rim. RBreak Life of tire G Warning! Tires and spare tire should be replaced after 6 years, regardless of the remaining tread. The service life of a tire is dependent upon varying factors including but not limited to: RDriving RTire RRegularly RIf RDo Tire inspection Every time you check the tire inflation pressure, you should also inspect your tires for the following: Rexcessive Rcord style driven inflation pressure RDistance RWhen replacing individual tires, you should mount new tires on the front wheels first (on vehicles with same-sized wheels all around). treadwear (Y page 235) Tread depth G Warning! Although the applicable federal motor vehicle safety laws consider a tire to be worn when the treadwear indicators (TWI) become visible at approximately 1/16 in or fabric showing through the tire's rubber bulges, cuts, cracks or splits in the tread or side of the tire Rbumps, Z 235