Single vs. Two-Hole Deflector Holes: What's the Difference?
A common misconception is that a single-row tire has a deeper wearable tread. That is simply not true. If you take a precise measurement of the tread depth (at least on Sentry’s tires), you will find that the tread depth is the same (within tolerance). Visually, though, it may look like the tread depth is shallower on a double row deflector tire. However, the single-row deflector tire allows the user to wear slightly past the wearable tread, whereas for the double row, you can only wear up to the first row of deflector holes. The manufacturer does not recommend this and, for equipment safety, change out your tires before the wear-out points.
Nonetheless, comparatively speaking, a two-row deflector tire has a more stable quality since the heat can better cure the “mid” section of the tire than a single-row. During operations, the two rows have better heat-releasing characteristics than single-row.