Zenna Tires

"75 mph is the highest rating for all of the All-Steel commercial tires. The highest North American Dot speed spec allowed.
Heat caused by higher then spec speed is not gonna matter much anymore when limiters go in to effect"

Interesting as Sailun, double coin and Leao offer 295/75r22.5 speed rating M which is 81 mph.
someone mentioned roadmasters- they are now engineered by cooper but made in china- I bought 8 and they were all out of round and out of balance on the highway, couldn't believe how out of round they were watching them spin on the balancer had them shaved round and all good now.