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Tire Alpha-Numeric Sizing System
In 1968, a new concept was introduced worldwide. The Alpha-Numeric sizing system is a load-based system where tires are designated by their load-carrying capacity & aspect ratio. The first letter is the load & size relationship, with letters ranging from A to N. The lower the letter, the smaller the size and, of course, the lower the load-carrying capacity of the tire.

| Avon tires | Dunlop tires | Goodyear tires | Michelin tires | Uniroyal tires |
| BF Goodrich tires | Firestone tires | Hankook tires | Pirelli tires | Yokohama tires |
| Bridgestone tires | Fuzion tires | Hoosier tires | Sumitomo tires | Discount tires |
| Continental tires | General tires | Kumho tires | Toyo tires | Wheels |
| Passenger Tires | Light Truck / SUV Tires |
Extreme Performance Summer Max Performance Summer
Yokohama ADVAN Sport
Yokohama AVS Sport RFT
Yokohama AVS S1
Yokohama S.drive
Yokohama AVS dB S2
High Performance Summer
Performance All-Season
Grand Touring All-Season
Yokohama Y376RX
Yokohama Y379B |
Street/Sport Truck Summer
Highway Rib Summer
Yokohama Y788R
Yokohama Geolandar H/T Y816
Yokohama Y815B
Yokohama TY088
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