See also:

Tire size
Example: 255/55 R 19 107 V 255: nominal width in mm 55: aspect ratio in % R: radial tire code 19: rim diameter in inches 107: load rating, not for ZR tires V: speed rating, before the R on ZR ti ...

Remove attached parts following use
Remove unneeded auxiliary mirrors, roof or rear luggage racks after use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...

Charging the battery
In the vehicle, only charge the battery via the terminals in the engine compartment, with the engine switched off. ...