Black scuff marks from a turning tire
The most common tire mark is a black scuff or streak, usually near where a driver turns the wheel while the car is stopped or moving slowly, at the end of a driveway or into a garage. That mark is rubber, transferred onto the concrete surface by friction, sitting on top of the slab rather than soaked into it.
A stiff bristle brush and a degreaser made for concrete, worked in with some elbow grease, lifts most of this without needing anything more aggressive. A pressure washer speeds it up, and a broom finished driveway, the most common finish for one, holds up fine to it.
A dark mark where a tire sat in one place
A different mark shows up where a car or trailer tire parked in the same spot for weeks or months. That mark is not rubber sitting on the surface, it is oil the tire itself carried leaching slowly into the concrete underneath it, and concrete that has not been sealed is porous enough to take some of that in.
This one cleans up the same way a fresh oil stain does, a degreaser worked in and given time to pull the oil back out, sometimes more than one pass. A shadow can remain even after the mark lifts, because the deepest part of the stain sits below the surface you are scrubbing.
Why some marks come back after they seemed gone
A scuff that looked clean after washing can reappear faintly once the concrete dries out completely, because a little rubber or oil residue was still working its way to the surface. That is not a sign the cleaning failed, it usually means one more pass with the degreaser finishes the job.
A sealed driveway resists this kind of staining far better than a bare one, because rubber and oil sit on top of a sealer instead of soaking into the concrete itself. If tire marks are a repeat problem in the same spot, that is worth asking us about the next time we are out.
A trailer or single tire parked in the same spot every week
A boat trailer, a mower, or a truck that lives in one exact spot leaves a different pattern than a car that pulls into a garage every day. The tire sits in the same place long enough for oil and rubber to build up gradually, so the mark shows up slowly instead of all at once, and by the time it is noticeable it has usually had months to settle in.
Rolling the vehicle or trailer a foot or two every so often, so a tire is not resting in the exact same spot for a whole season, keeps this kind of buildup from concentrating in one place. It is a small habit, and it does more than any amount of scrubbing does once a mark has already set in.