| Clue | Source | Date |
|---|---|---|
| Something worn while driving | ||
| Goodyear surface | LA Times Daily | 18 Dec 2022 |
| It gets bald over time | New York Times | 19 Mar 2022 |
| Its depth is checked in an auto inspection | USA Today | 20 Mar 2018 |
| Its depth is measured in auto inspections | Universal | 24 Apr 2016 |
| Part of an automobile shoe. |