Trailer Tire Speed Rating Chart. R TIRE SIING RATINGS ffi ALL MAES MODELS ECS TUNING 1000 SEILLE RD. We do have a couple brands that have higher speed ratings.
Speed Rating Max MPH Max KMH. Bias ply see below 16. Consult the tire manufacturer for maximum speed when there is no service description.
Notice that Z comes right before W and Y.
W and Y-speed tires were innovated later as cars got faster with the help of technology. A rating corresponds to maximum performance speeds of 3 mph and Z. The highest rating Z is 149 mph. Please note that Milestar does not recommend the use of any tire above the legal speed limit of the road the.