Previously, I had been utilizing Goodyear Ultra Grip Ice +. Therefore, in most cases, I was not aware of such minute pits. Rubber for use on roads that do not have potholes or curbs. I won't buy again. Below are some advantages: Excellent rowing! Everywhere! I skated throughout the entirety of the previous season, and all of the spikes and tires appear to be brand new. With these drawbacks: The sidewall has too much sensitivity. A week ago, there was a pit that was 2-3 cm deep and buried by water, and it had a speed of 60. Both sidewalls on both wheels were torn, and it happened on the starboard side. Cannot be fixed in any way.