That's the thing they both say 31x10.5x15 on the sidewall but when you compare them side by side there is almost an inch difference between the 2. The kendas are actually wider and taller than the goodyear. Of course I never compared them until yesterday when I swapped them. I'll give it a try at speed again when we get more snow and see if it made a difference. I'm hoping it was just the tire issue.