>>46849168Most of Fire's resists are common
>BugU-turn is one of the top 5 most used moves in the game (singles), though in doubles it's never seen
>FireGreat offensive type, beats Steel, Grass, Bug, and Ice types, and resisting it while also being immune to burn is huge
>IceThe premier offensive special type, and more recently physical too. G-darm, Mamoswine, Kyurem-B, Weavile, Kyurem, Cloyster, A-Ninetales, Glastrier, and Vanilluxe are all good
>FairyStrongest type in the game, Fire being the only type to resist both Steel and Fairy makes it a great check to OP Pokemon like M-Mawile, Magearna, and Zacian.
>SteelWay more common offensively nowadays due to the overabundance of Fairies. Excadrill, Bisharp, Aegislash, Cobalion, Ferrothorn, Scizor, Jirachi, Magnezone, Zamazenta, Melmetal, Kartana, and Heatran all being common in higher tiers.
>GrassRillaboom has been dominating OU ever since it got Grassy Surge, so this is a huge resist right now, and Kartana is also in the tier. In lower tiers, it also checks Tangrowth, Venusaur, Decidueye, Roserade, Tapu Bulu, Vileplume, and Zarude, with Zarude being the king of RU.
Fire is, in my opinion, the 3rd strongest defensive type, behind only Fairy and Steel, and ahead of Poison and Water.