Made in ...: Country of production MO: Original tires for Mercedes-Benz MOE: Mercedes-Benz original extended[23] Mountain snowflake pictograph: Winter passenger and light truck tires that meet the severe snow service requirements of Rubber Manufacturers Association (RMA) and Rubber Association of Canada (RAC).[23] N-x: Original tires for Porsche where "x" is a "0" for the first approved in that size, "1" the second, ...[23] "NHS": Not highway service ORWL: Outlined raised white Llettering OWL: Outline white lettering RF: Reinforced – for Euro-metric tires, the term 'reinforced' means the same thing as 'extra load'[23] RFT: Run-flat tire; Tires designed for vehicles without spare tires.