2009 Mercedes SLR McLaren Owner's Manual - Page 290

Operation Tires and wheels Thoroughly clean the mounting face of wheels and brake disks, i.e. the inner side of the wheels/tires, during each rotation. Check for and ensure proper tire inflation pressure. Warning! Anti-theft wheel nuts Your vehicle is equipped with anti-theft wheel nuts that prevent the theft of your vehicle's wheels. Warning! G G 1 Anti-theft wheel nut 2 Wheel nut key Removing anti-theft wheel nuts Unscrew anti-theft wheel nut 1 using wheel nut key 2. Replace anti-theft wheel nut 1 with one of the regular wheel bolts. Fasten the wheel bolt and tighten it with a torque wrench to a tightening torque of 95 lb-ft (130 Nm). Have the tightening torque checked after changing a wheel. Wheels could become loose if not tightened with a torque of 95 lb-ft (130 Nm). Only use Genuine Mercedes-Benz wheel bolts specified for your vehicle's rims. Pull the parking brake lever up as many notches as possible and move the gear selector lever to park position P, before loosening the wheel bolts. Otherwise the vehicle may move and cause an accident and/or serious personal injury. For information on wheel change, see the "Practical hints" section ( page 365). ! Do not use air tools, such as an impact wrench, when installing or removing the anti-theft wheel nuts. An impact wrench can damage the anti-theft wheel nuts and the wheel nut key, or cause them to malfunction. ! Store wheel bolts and anti-theft wheel nuts not currently in use in a safe place to avoid damage to the threads. 290