2009 Mercedes SL-Class Owner's Manual - Page 256

Practical hints Where will I find ...? X X X Remove storage well casing base 4. Remove retaining screw 3 by turning it counterclockwise. Remove spare wheel 1. For information on mounting the spare wheel, see "Flat tire" (Y page 317). Storing the spare wheel after use If you wish to store the spare wheel after use, carry out the following steps. Otherwise, the spare wheel may not fit the spare wheel well. i Vehicles with 19" spare wheel only: Before placing the spare wheel in the spare wheel well fasten tensioning straps, see "Compressing the collapsible tire" (Y page 254). X Place the spare wheel in the spare wheel well. X Secure the spare wheel by turning retaining screw 3 clockwise. Compressing the collapsible tire This description applies to vehicles with 19" spare wheel only. The collapsible tire on a 19" spare wheel must be compressed with two tensioning straps before you can store it in the spare wheel well. X X Extend the tensioning strap by pulling the slider. Place tensioning strap around the spare wheel rim and collapsible tire with the buckle facing the inside of the rim. Close the buckle. Pull the loose end of the tensioning strap. The tensioning strap must be pulled as tight as possible. ! Make sure the spare wheel is dry before storing it. X X Unscrew the valve cap from the valve of the collapsible tire. Unscrew the valve insert from the valve using the valve extractor integrated in the valve cap. Allow the air to escape. X i The tensioning straps are shown in red for illustration purposes. The tensioning straps on the spare wheel of your vehicle are black. X X i It may take a few minutes for the collapsible tire to deflate completely. X Screw the valve insert back into the valve. X Screw the valve cap back on the valve. 254