Oedran ystadegol ystadegol y teiars yn dibynnu ar y wlad. Mae'r ystadegau hyn yn seiliedig ar ddata a gyflwynwyd gan ddefnyddwyr gwefan CheckTire.com.
| Gwlad | nifer y defnyddiau | Oedran cyfartalog y teiars |
|---|---|---|
| 🇸🇦 Saudi Arabia | 217138 | 4.67 |
| 🇺🇸 Unol Daleithiau | 167619 | 8.68 |
| 🇨🇦 Canada | 44484 | 8.28 |
| 🇴🇲 Oman | 16244 | 3.88 |
| 🇬🇧 Y Deyrnas Unedig | 15515 | 8.63 |
| 🇦🇺 Awstralia | 14937 | 9.49 |
| 🇧🇬 Bwlgaria | 13711 | 7.79 |
| 🇳🇱 Yr Iseldiroedd | 12276 | 11.32 |
| 🇷🇴 Rwmania | 10908 | 7.10 |
| 🇰🇼 Kuwait | 9107 | 4.91 |
| 🇦🇪 Emiradau Arabaidd Unedig | 8281 | 4.73 |
| 🇩🇪 Yr Almaen | 7788 | 8.75 |
| 🇮🇶 Irac | 6553 | 6.00 |
| 🇵🇱 Gwlad Pwyl | 5642 | 10.69 |
| 🇮🇳 India | 5446 | 2.90 |
| 🇲🇾 Malaysia | 4878 | 3.53 |
| 🇵🇭 Philippines | 4552 | 4.71 |
| 🇭🇺 Hwngari | 4006 | 8.83 |
| 🇶🇦 Qatar | 3641 | 3.82 |
| 🇪🇪 Estonia | 3044 | 9.10 |
| 🇸🇪 Sweden | 3000 | 9.01 |
| 🇭🇷 Croatia | 2998 | 6.89 |
| 🇷🇸 Serbia | 2998 | 7.73 |
| 🇧🇭 Bahrain | 2902 | 5.02 |
| 🇪🇬 Yr Aifft | 2771 | 7.30 |
| 🇲🇽 Mecsico | 2769 | 6.45 |
| 🇷🇺 Rwsia | 2695 | 11.02 |
| 🇫🇮 Y Ffindir | 2498 | 13.52 |
| 🇸🇮 Slofenia | 2076 | 7.53 |
| 🇨🇿 Gweriniaeth Tsiec | 2009 | 9.05 |
| 🇹🇭 Gwlad Thai | 1996 | 8.64 |
| 🇹🇷 Twrci | 1941 | 10.26 |
| 🇮🇹 Yr Eidal | 1940 | 7.94 |
| 🇧🇪 Gwlad Belg | 1891 | 10.53 |
| 🇮🇷 Iran | 1851 | 12.51 |
| 🇸🇬 Singapore | 1729 | 4.16 |
| 🇯🇴 Gwlad yr Iorddonen | 1714 | 6.55 |
| 🇫🇷 Ffrainc | 1614 | 9.50 |
| 🇩🇰 Denmarc | 1559 | 9.39 |
| 🇬🇷 Gwlad Groeg | 1419 | 5.85 |
| 🇾🇪 Yemen | 1393 | 6.50 |
| 🇱🇾 Libya | 1361 | 6.47 |
| 🇻🇳 Fietnam | 1330 | 6.66 |
| 🇳🇴 Norwy | 1309 | 10.22 |
| 🇮🇱 Israel | 1293 | 5.40 |
| 🇧🇦 Bosnia a Herzegovina | 1267 | 9.56 |
| 🇧🇷 Brasil | 1241 | 9.70 |
| 🇨🇭 Swistir | 1180 | 7.99 |
| 🇹🇼 Taiwan | 1162 | 5.10 |
| 🇱🇹 Lithwania | 1146 | 8.08 |
| 🇸🇰 Slofacia | 1138 | 7.70 |
| 🇩🇿 Algeria | 1044 | 9.55 |
| 🇺🇦 Wcráin | 932 | 11.17 |
| 🇪🇸 Sbaen | 882 | 7.66 |
| 🇵🇰 Pacistan | 865 | 7.68 |
| 🇦🇹 Awstria | 747 | 7.91 |
| 🇲🇲 Myanmar | 746 | 10.97 |
| 🇲🇦 Moroco | 678 | 8.28 |
| 🇳🇬 Nigeria | 629 | 5.10 |
| 🇱🇧 Libanus | 624 | 7.10 |
| 🇧🇩 Bangladesh | 589 | 12.21 |
| 🇮🇩 Indonesia | 583 | 9.46 |
| 🇳🇿 Seland Newydd | 569 | 9.95 |
| 🇬🇪 Georgia | 525 | 9.54 |
| 🇮🇪 Iwerddon | 509 | 8.87 |
| 🇱🇰 Sri Lanka | 496 | 6.94 |
| 🇵🇹 Portiwgal | 496 | 9.99 |
| 🇿🇦 De Affrica | 486 | 7.13 |
| 🇱🇻 Latfia | 476 | 9.28 |
| 🇸🇩 Sudan | 470 | 7.78 |
| 🇹🇳 Tiwnisia | 470 | 8.19 |
| 🇭🇰 Hong Kong | 466 | 9.01 |
| 🇮🇸 Gwlad yr Iâ | 397 | 10.13 |
| 🇯🇵 Japan | 393 | 7.50 |
| 🇦🇱 Albania | 357 | 6.84 |
| 🇰🇭 Cambodia | 331 | 9.89 |
| 🇰🇷 De Corea | 326 | 7.19 |
| 🇲🇰 Gogledd Macedonia | 323 | 8.32 |
| 🇨🇳 China | 320 | 12.48 |
| 🇦🇷 Yr Ariannin | 298 | 10.30 |
| 🇵🇸 Palestina | 296 | 7.22 |
| 🇵🇷 Puerto Rico | 257 | 7.26 |
| 🇧🇳 Brunei | 224 | 4.68 |
| 🇨🇴 Colombia | 221 | 8.24 |
| 🇨🇱 Chile | 216 | 11.38 |
| 🇩🇴 Dominicana | 200 | 8.55 |
| 🇦🇿 Azerbaijan | 176 | 10.13 |
| 🇲🇪 Montenegro | 174 | 6.38 |
| 🇧🇾 Belarus | 161 | 11.92 |
| 🇱🇺 Lwcsembwrg | 157 | 8.09 |
| 🇸🇾 Syria | 156 | 7.33 |
| 🇬🇭 Ghana | 155 | 8.60 |
| 🇹🇹 Trinidad a Tobago | 153 | 5.30 |
| 🇰🇪 Kenya | 151 | 5.79 |
| 🇲🇺 Mauritius | 145 | 6.98 |
| 🇵🇪 Periw | 141 | 8.30 |
| 🇲🇳 Mongolia | 137 | 11.33 |
| 🇲🇩 Moldofa | 126 | 7.92 |
| 🇨🇾 Cyprus | 119 | 3.98 |
| 🇨🇷 Costa Rica | 114 | 7.87 |
| 🇹🇿 Tanzania | 114 | 5.59 |
| 🇳🇵 Nepal | 111 | 15.01 |
| 🇲🇹 Malta | 109 | 7.41 |
| 🇰🇿 Kazakhstan | 108 | 10.74 |
| 🇬🇹 Guatemala | 107 | 9.55 |
| 🇲🇷 Mauritania | 105 | 10.02 |
| 🇦🇴 Angola | 102 | 5.51 |
| 🇭🇳 Honduras | 101 | 8.90 |
| 🇵🇦 Panama | 99 | 7.96 |
| 🇻🇪 Venezuela | 86 | 9.56 |
| 🇪🇨 Ecwador | 84 | 9.75 |
| 🇺🇿 Uzbekistan | 80 | 13.53 |
| 🇸🇻 El Salvador | 79 | 9.92 |
| 🇸🇴 Somalia | 67 | 9.13 |
| 🇦🇫 Affghanistan | 62 | 9.72 |
| 🇯🇲 Jamaica | 62 | 6.65 |
| 🇦🇲 Armenia | 61 | 13.63 |
| 🇵🇾 Paraguay | 59 | 9.21 |
| 🇳🇮 Nicaragua | 58 | 11.78 |
| 🇪🇹 Ethiopia | 57 | 13.67 |
| 🇧🇿 Belize | 50 | 5.81 |
| 🇬🇺 Guam | 49 | 8.40 |
| 🇺🇬 Uganda | 40 | 4.43 |
| 🇨🇼 Curaçao | 35 | 6.50 |
| 🇲🇴 Macau | 35 | 5.70 |
| 🇬🇾 Guyana | 33 | 9.71 |
| 🇺🇾 Uruguay | 32 | 13.42 |
| 🇳🇦 Namibia | 29 | 5.65 |
| 🇱🇦 Laos | 28 | 20.61 |
| 🇧🇧 Barbados | 24 | 5.94 |
| 🇸🇳 Senegal | 21 | 10.99 |
| 🇧🇴 Bolifia | 20 | 12.36 |
| 🇲🇿 Mozambique | 20 | 7.98 |
| 🇸🇷 Swrinam | 18 | 7.60 |
| 🇿🇲 Zambia | 17 | 4.93 |
| 🇩🇯 Djibouti | 16 | 3.34 |
| 🇮🇲 Ynys Manaw | 16 | 13.39 |
| 🇧🇼 Botswana | 15 | 11.08 |
| 🇰🇬 Kyrgyzstan | 10 | 13.27 |
| 🇹🇲 Turkmenistan | 10 | 13.73 |
| 🇧🇹 Bhutan | 9 | 6.71 |
| 🇷🇼 Rwanda | 9 | 9.02 |
| 🇧🇸 Bahamas | 8 | 9.37 |
| 🇯🇪 Ynys Jersey | 8 | 3.59 |
| 🇲🇱 Mali | 8 | 3.28 |
| 🇲🇼 Malawi | 8 | 6.60 |
| 🇦🇬 Antigua a Barbuda | 7 | 10.29 |
| 🇭🇹 Haiti | 7 | 16.36 |
| 🇳🇪 Niger | 7 | 6.20 |
| 🇹🇯 Tajikistan | 7 | 12.37 |
| 🇻🇬 Ynysoedd Virgin (DU) | 7 | 5.20 |
| 🇬🇲 Gambia | 6 | 11.24 |
| 🇱🇨 Saint Lucia | 6 | 6.35 |
| 🇲🇨 Monaco | 6 | 7.11 |
| 🇲🇻 Maldives | 6 | 13.53 |
| 🇦🇽 Ynysoedd Åland | 5 | 9.92 |
| 🇱🇷 Liberia | 5 | 9.17 |
| 🇽🇰 Kosovo | 5 | 1.99 |
| 🇦🇼 Aruba | 4 | 3.90 |
| 🇩🇲 Dominica | 4 | 16.48 |
| 🇪🇺 Yr Undeb Ewropeaidd | 4 | 14.84 |
| 🇬🇮 Gibraltar | 4 | 10.71 |
| 🇧🇯 Benin | 3 | 6.59 |
| 🇫🇴 Ynysoedd Ffaro | 3 | 19.36 |
| 🇬🇳 Gini | 3 | 14.75 |
| 🇲🇬 Madagascar | 3 | 8.42 |
| 🇸🇽 Sint Maarten | 3 | 5.69 |
| 🇿🇼 Zimbabwe | 3 | 17.30 |
| 🇧🇫 Burkina Faso | 2 | 21.29 |
| 🇫🇯 Ffiji | 2 | 1.68 |
| 🇬🇬 Guernsey | 2 | 14.11 |
| 🇰🇳 Saint Kitts a Nevis | 2 | 16.23 |
| 🇲🇵 Ynysoedd Gogledd Mariana | 2 | 4.77 |
| 🇸🇨 Seychelles | 2 | 15.54 |
| 🇦🇸 Samoa Americanaidd | 1 | 1.33 |
| 🇰🇲 Comoros | 1 | 5.04 |
| 🇰🇾 Ynysoedd Cayman | 1 | 10.06 |
| 🇳🇨 Caledonia Newydd | 1 | 2.61 |
| 🇵🇬 Papwa Gini Newydd | 1 | 1.30 |
| 🇻🇨 Saint Vincent a'r Grenadines | 1 | 1.04 |