10% on-road / 90% offroad Dunlop designed the D606 tire to be street-legal but with an emphasis on aggressive off-road riding and great durability. A full-depth tread pattern designed for rigorous off-road use yields excellent traction on everything from hard-packed fire roads to soft single-track trails. At the same time, the D606s tread compound is engineered for good highway durability and grip. D606F front tire matches with D739 A/T rear for desert riders.