Yes, this tire qualification already includes the metric and English standard measurements. There are some people who think that tire classifications are not very important but this can be very useful especially when people are trying to find the right tires to purchase.
There are different tires available and it is essential that people will pick the right one. If not, this can become problematic for the vehicle and also for the tires. There are some tires that are not meant for certain roads. Choose the right tires depending on their classifications to be sure. The right tires will ensure that you will stay safe while riding.