This does however make their on road performance worse than a truck which can turn it off. Some trucks like the K-700 and B-66 have their diff lock always on which provides the benefit of being able to use diff lock in automatic mode as well as not taking damage on hard surfaces on hardcore. Some Trucks like the C-65115 do not have diff lock and is more suited to paved roads and trails rather then mud. The disadvantage is that handling is worse since the tires cannot rotate freely and on Hardcore, keeping diff lock on on hard surfaces damages the truck. Diff lock causes all driven wheels to rotate at the same speed which greatly increase traction on hills and mud. Lock in-game) is a gameplay mechanic in Spintires, MudRunner, and SnowRunner.ĭiff lock is activated by a single button except in Hardcore where diff locking is unavailable in automatic mode.