The Defiance DD66 drive tire is engineered with an enhanced rubber compound to resist cutting, punctures and chunking in demanding off-road applications. The DD66’s extra-deep 31/32” tread depth and unique tread block design deliver superior on and off-road traction and excellent tread life. The deep tread grooves feature “stone ejectors” to prevent stone drilling thereby extending tire life and improving retreadability. The DD66 is designed to handle severe service applications such as logging, mining and construction.