What does 12.00r20 tire mean?
1 Answers
12.00 is the tire's section width, R stands for radial tire, and 20 is the rim diameter. Generally, tire specifications can be described as: tire width in mm, aspect ratio (percentage of tire height to width), rim diameter in inches, load index, speed symbol, or alternatively as tire width in mm, aspect ratio, speed symbol, rim diameter in inches, and load index. For example, a tire marked as 195/65R1588H or 195/65HR1588 can be interpreted as: tire width 195mm, aspect ratio 65% (tire height = 126.75mm, 126.75/195*100%=65%), rim diameter 15 inches, load index 88, and speed symbol H. The speed rating indicates the maximum speed at which the tire can carry a specified load under defined conditions. Common speed ratings include: Q for 160 km/h, R for 170 km/h, S for 180 km/h, T for 190 km/h, H for 210 km/h, V for 240 km/h, W for 270 km/h, Y for 300 km/h, and Z or ZR for speeds above 240 km/h. If ZR appears, such as in P275/40ZR1793W, the maximum speed rating ("W" in "93W") is 270 km/h.