Someone drove across your lawn, and it might have been you. Now your lawn has big tire ruts and it needs immediate repair. If your ruts happen during the winter when the lawn is dormant, you may want to wait until early spring to refill the ruts with top soil, knock down the edges and reseed at the same time you would normally seed your lawn. If you have ruts in a gorgeous summer lawn, an immediate repair may be a better choice.
Rake the sides of the ruts from the grass toward the middle of the rut. Use a garden shovel to even out holes or dips.
Add topsoil along the entire rut, and rake the top soil in. Allow for the depth of the sod you will replace.
Cut sod from a less visible portion of your lawn using a sod knife and transfer shovel. Press the sod into the repaired ruts so that the new lawn blends with the old lawn. Water in your sod, and keep all foot traffic off that part of the lawn for 2 to 3 weeks until the sod roots into the soil.