Kitakwimu umri wa wastani wa matairi katika Marekani. Umri wa takwimu wa matairi katika miaka fulani huhesabiwa kwa msingi wa data iliyoingizwa na watumiaji wa tovuti ya CheckTire.com.
| Mwaka | idadi ya matumizi | Umri wa wastani wa matairi |
|---|---|---|
| 2025 | 16322 | 9.20 |
| 2024 | 36476 | 8.92 |
| 2023 | 20757 | 8.82 |
| 2022 | 17709 | 8.44 |
| 2021 | 31541 | 8.25 |
| 2020 | 26024 | 8.69 |
| 2019 | 6401 | 8.40 |
| 2018 | 1319 | 9.24 |
| 2017 | 62 | 9.86 |
| Tarehe/Saa UTC | DOT | Umri wa tairi |
|---|---|---|
| 2025-07-01 00:43 | 1722 | 3 miaka 2 miezi 6 siku |
| 2025-07-01 00:42 | 1519 | 6 miaka 2 miezi 23 siku |
| 2025-07-01 00:34 | 4619 | 5 miaka 7 miezi 20 siku |
| 2025-06-30 23:57 | 2312 | 13 miaka 26 siku |
| 2025-06-30 23:56 | 5116 | 8 miaka 6 miezi 11 siku |
| 2025-06-30 23:52 | 1422 | 3 miaka 2 miezi 26 siku |
| 2025-06-30 23:37 | 0523 | 2 miaka 5 miezi |
| 2025-06-30 23:34 | 477 | 27 miaka 7 miezi 13 siku |
| 2025-06-30 22:46 | 2907 | 17 miaka 11 miezi 14 siku |
| 2025-06-30 22:44 | 5022 | 2 miaka 6 miezi 18 siku |
| 2025-06-30 22:19 | 299 | 25 miaka 11 miezi 11 siku |
| 2025-06-30 22:19 | 199 | 26 miaka 1 mwezi 20 siku |
| 2025-06-30 22:16 | 0922 | 3 miaka 4 miezi 2 siku |
| 2025-06-30 21:58 | 4021 | 3 miaka 8 miezi 26 siku |
| 2025-06-30 21:58 | 3421 | 3 miaka 10 miezi 7 siku |
| 2025-06-30 21:51 | 0222 | 3 miaka 5 miezi 20 siku |
| 2025-06-30 21:50 | 3822 | 2 miaka 9 miezi 11 siku |
| 2025-06-30 21:31 | 2722 | 2 miaka 11 miezi 26 siku |
| 2025-06-30 20:51 | 1018 | 7 miaka 3 miezi 25 siku |
| 2025-06-30 20:37 | 4420 | 4 miaka 8 miezi 4 siku |