I see, in the right lower corner of the pic, they have embossened the ECE (European law) ratings marks also. Encircled' E' stands for European regulations. S stands for Sound (noise), W stands for Wet grip, Tyre fulfills the latest requisites laid down by the EU. After the S & W marks, there is a 'R' mark also. I searched for its meaning but couldn't find, do you know what it is? Mefeels, it must be Rolling Resistance, as more & more importance is being given to the fuel efficiency in European law. Lesser is the Rolling resistance more is the FE. Here are pics of Alppollo Alnac (not 4 G) Treadwear, Traction & temperature ratings, The treadwear rating is marginally better than 4G, and temperature tolerance is one step lower than the 4G. And the ECE markings Only difference between 4G & non 4 G is that 4G shows R2 & non 4G shows R2 ratings.