| Clue | Source | Date |
|---|---|---|
| Michelin alternative | ||
| Tires brand | ||
| Big name in tires | The Washington Post | 31 Dec 2018 |
| Big name in tires | LA Times Daily | 31 Dec 2018 |
| Firestone competitor | The Washington Post | 05 Mar 2018 |
| Firestone competitor | LA Times Daily | 05 Mar 2018 |
| Big name in tires | ||
| Longtime rubber company | The Washington Post | 24 Sep 2017 |
| Longtime rubber company | LA Times Daily | 24 Sep 2017 |
| Longtime rubber company | ||
| Tire brand | ||
| Maker of tires and tennis balls | ||
| Maker of tires and tennis balls | ||
| Longtime tire brand | ||
| Longtime tire brand | ||
| Big name in tires | ||
| Firestone competitor | ||
| Pneumatic-tire pioneer | ||
| Rival of Titleist | ||
| Tire brand | ||
| Michelin rival | ||
| Big name in tires | ||
| Michelin competitor | ||
| Inventor of the pneumatic tire | ||
| Michelin rival |